diff --git a/crates/libs/bindgen/src/rust/delegates.rs b/crates/libs/bindgen/src/rust/delegates.rs
index bcb7bcdf87..f601c303f6 100644
--- a/crates/libs/bindgen/src/rust/delegates.rs
+++ b/crates/libs/bindgen/src/rust/delegates.rs
@@ -105,6 +105,10 @@ fn gen_win_delegate(writer: &Writer, def: TypeDef) -> TokenStream {
             unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
                 let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
 
+                if iid.is_null() || interface.is_null() {
+                    return ::windows_core::HRESULT(-2147467261); // E_POINTER
+                }
+
                 *interface = if *iid == <#ident as ::windows_core::ComInterface>::IID ||
                     *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID ||
                     *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID {
diff --git a/crates/libs/core/src/imp/weak_ref_count.rs b/crates/libs/core/src/imp/weak_ref_count.rs
index ee46a6bc33..1f6a70a28a 100644
--- a/crates/libs/core/src/imp/weak_ref_count.rs
+++ b/crates/libs/core/src/imp/weak_ref_count.rs
@@ -126,6 +126,10 @@ impl TearOff {
     unsafe extern "system" fn StrongQueryInterface(ptr: *mut std::ffi::c_void, iid: *const crate::GUID, interface: *mut *mut std::ffi::c_void) -> crate::HRESULT {
         let this = Self::from_strong_ptr(ptr);
 
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261); // E_POINTER
+        }
+
         // Only directly respond to queries for the the tear-off's strong interface. This is
         // effectively a self-query.
         if *iid == IWeakReferenceSource::IID {
@@ -142,6 +146,10 @@ impl TearOff {
     unsafe extern "system" fn WeakQueryInterface(ptr: *mut std::ffi::c_void, iid: *const crate::GUID, interface: *mut *mut std::ffi::c_void) -> crate::HRESULT {
         let this = Self::from_weak_ptr(ptr);
 
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261); // E_POINTER
+        }
+
         // While the weak vtable is packed into the same allocation as the strong vtable and
         // tear-off, it represents a distinct COM identity and thus does not share or delegate to
         // the object.
diff --git a/crates/libs/implement/src/lib.rs b/crates/libs/implement/src/lib.rs
index e26f8fc5a2..095a854d38 100644
--- a/crates/libs/implement/src/lib.rs
+++ b/crates/libs/implement/src/lib.rs
@@ -64,16 +64,14 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
                 }
             }
             impl #generics ::windows::core::AsImpl<#original_ident::#generics> for #interface_ident where #constraints {
+                // SAFETY: the offset is guranteed to be in bounds, and the implementation struct
+                // is guaranteed to live at least as long as `self`.
                 unsafe fn as_impl(&self) -> &#original_ident::#generics {
                     let this = ::windows::core::Interface::as_raw(self);
-                    // SAFETY: the offset is guranteed to be in bounds, and the implementation struct
-                    // is guaranteed to live at least as long as `self`.
-                    unsafe {
-                        // Subtract away the vtable offset plus 1, for the `identity` field, to get
-                        // to the impl struct which contains that original implementation type.
-                        let this = (this as *mut *mut ::core::ffi::c_void).sub(1 + #offset) as *mut #impl_ident::#generics;
-                        &(*this).this
-                    }
+                    // Subtract away the vtable offset plus 1, for the `identity` field, to get
+                    // to the impl struct which contains that original implementation type.
+                    let this = (this as *mut *mut ::core::ffi::c_void).sub(1 + #offset) as *mut #impl_ident::#generics;
+                    &(*this).this
                 }
             }
         }
@@ -105,27 +103,29 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
                 &self.this
             }
             unsafe fn QueryInterface(&self, iid: *const ::windows::core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows::core::HRESULT {
-                unsafe {
-                    *interface = if *iid == <::windows::core::IUnknown as ::windows::core::ComInterface>::IID
-                        || *iid == <::windows::core::IInspectable as ::windows::core::ComInterface>::IID
-                        || *iid == <::windows::core::imp::IAgileObject as ::windows::core::ComInterface>::IID {
-                            &self.identity as *const _ as *mut _
-                    } #(#queries)* else {
-                        ::core::ptr::null_mut()
-                    };
-
-                    if !(*interface).is_null() {
-                        self.count.add_ref();
-                        return ::windows::core::HRESULT(0);
-                    }
+                if iid.is_null() || interface.is_null() {
+                    return ::windows::core::HRESULT(-2147467261); // E_POINTER
+                }
 
-                    *interface = self.count.query(iid, &self.identity as *const _ as *mut _);
+                *interface = if *iid == <::windows::core::IUnknown as ::windows::core::ComInterface>::IID
+                    || *iid == <::windows::core::IInspectable as ::windows::core::ComInterface>::IID
+                    || *iid == <::windows::core::imp::IAgileObject as ::windows::core::ComInterface>::IID {
+                        &self.identity as *const _ as *mut _
+                } #(#queries)* else {
+                    ::core::ptr::null_mut()
+                };
 
-                    if (*interface).is_null() {
-                        ::windows::core::HRESULT(0x8000_4002) // E_NOINTERFACE
-                    } else {
-                        ::windows::core::HRESULT(0)
-                    }
+                if !(*interface).is_null() {
+                    self.count.add_ref();
+                    return ::windows::core::HRESULT(0);
+                }
+
+                *interface = self.count.query(iid, &self.identity as *const _ as *mut _);
+
+                if (*interface).is_null() {
+                    ::windows::core::HRESULT(-2147467262) // E_NOINTERFACE
+                } else {
+                    ::windows::core::HRESULT(0)
                 }
             }
             fn AddRef(&self) -> u32 {
@@ -134,9 +134,7 @@ pub fn implement(attributes: proc_macro::TokenStream, original_type: proc_macro:
             unsafe fn Release(&self) -> u32 {
                 let remaining = self.count.release();
                 if remaining == 0 {
-                    unsafe {
-                        _ = ::std::boxed::Box::from_raw(self as *const Self as *mut Self);
-                    }
+                    _ = ::std::boxed::Box::from_raw(self as *const Self as *mut Self);
                 }
                 remaining
             }
diff --git a/crates/libs/windows/src/Windows/ApplicationModel/Background/mod.rs b/crates/libs/windows/src/Windows/ApplicationModel/Background/mod.rs
index b9101f746e..f853263d55 100644
--- a/crates/libs/windows/src/Windows/ApplicationModel/Background/mod.rs
+++ b/crates/libs/windows/src/Windows/ApplicationModel/Background/mod.rs
@@ -5826,6 +5826,9 @@ impl<F: FnMut(::core::option::Option<&IBackgroundTaskInstance>, BackgroundTaskCa
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <BackgroundTaskCanceledEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -5897,6 +5900,9 @@ impl<F: FnMut(::core::option::Option<&BackgroundTaskRegistration>, ::core::optio
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <BackgroundTaskCompletedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -5968,6 +5974,9 @@ impl<F: FnMut(::core::option::Option<&BackgroundTaskRegistration>, ::core::optio
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <BackgroundTaskProgressEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/ApplicationModel/DataTransfer/mod.rs b/crates/libs/windows/src/Windows/ApplicationModel/DataTransfer/mod.rs
index 60513d3649..c66edc4d9b 100644
--- a/crates/libs/windows/src/Windows/ApplicationModel/DataTransfer/mod.rs
+++ b/crates/libs/windows/src/Windows/ApplicationModel/DataTransfer/mod.rs
@@ -3304,6 +3304,9 @@ impl<F: FnMut(::core::option::Option<&DataProviderRequest>) -> ::windows_core::R
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DataProviderHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3374,6 +3377,9 @@ impl<F: FnMut(::core::option::Option<&ShareProviderOperation>) -> ::windows_core
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ShareProviderHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/ApplicationModel/Payments/mod.rs b/crates/libs/windows/src/Windows/ApplicationModel/Payments/mod.rs
index 53f6f257aa..87ff5172cd 100644
--- a/crates/libs/windows/src/Windows/ApplicationModel/Payments/mod.rs
+++ b/crates/libs/windows/src/Windows/ApplicationModel/Payments/mod.rs
@@ -2249,6 +2249,9 @@ impl<F: FnMut(::core::option::Option<&PaymentRequest>, ::core::option::Option<&P
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <PaymentRequestChangedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/ApplicationModel/Store/mod.rs b/crates/libs/windows/src/Windows/ApplicationModel/Store/mod.rs
index f59d9363a4..a2744dd5ca 100644
--- a/crates/libs/windows/src/Windows/ApplicationModel/Store/mod.rs
+++ b/crates/libs/windows/src/Windows/ApplicationModel/Store/mod.rs
@@ -1496,6 +1496,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <LicenseChangedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Data/Text/mod.rs b/crates/libs/windows/src/Windows/Data/Text/mod.rs
index 67138675c1..841a96a960 100644
--- a/crates/libs/windows/src/Windows/Data/Text/mod.rs
+++ b/crates/libs/windows/src/Windows/Data/Text/mod.rs
@@ -1334,6 +1334,9 @@ impl<F: FnMut(::core::option::Option<&super::super::Foundation::Collections::IIt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SelectableWordSegmentsTokenizingHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1418,6 +1421,9 @@ impl<F: FnMut(::core::option::Option<&super::super::Foundation::Collections::IIt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <WordSegmentsTokenizingHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Devices/SmartCards/mod.rs b/crates/libs/windows/src/Windows/Devices/SmartCards/mod.rs
index 998e2f94e8..3a9bc4dc4b 100644
--- a/crates/libs/windows/src/Windows/Devices/SmartCards/mod.rs
+++ b/crates/libs/windows/src/Windows/Devices/SmartCards/mod.rs
@@ -4530,6 +4530,9 @@ impl<F: FnMut(::core::option::Option<&SmartCardProvisioning>, ::core::option::Op
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SmartCardPinResetHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Devices/Sms/mod.rs b/crates/libs/windows/src/Windows/Devices/Sms/mod.rs
index c8d39b624e..ce18f0407c 100644
--- a/crates/libs/windows/src/Windows/Devices/Sms/mod.rs
+++ b/crates/libs/windows/src/Windows/Devices/Sms/mod.rs
@@ -4413,6 +4413,9 @@ impl<F: FnMut(::core::option::Option<&SmsDevice>) -> ::windows_core::Result<()>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SmsDeviceStatusChangedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -4497,6 +4500,9 @@ impl<F: FnMut(::core::option::Option<&SmsDevice>, ::core::option::Option<&SmsMes
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SmsMessageReceivedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Foundation/Collections/mod.rs b/crates/libs/windows/src/Windows/Foundation/Collections/mod.rs
index 230bccc736..8f818e0398 100644
--- a/crates/libs/windows/src/Windows/Foundation/Collections/mod.rs
+++ b/crates/libs/windows/src/Windows/Foundation/Collections/mod.rs
@@ -1488,6 +1488,9 @@ impl<K: ::windows_core::RuntimeType + 'static, V: ::windows_core::RuntimeType +
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MapChangedEventHandler<K, V> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1571,6 +1574,9 @@ impl<T: ::windows_core::RuntimeType + 'static, F: FnMut(::core::option::Option<&
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <VectorChangedEventHandler<T> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Foundation/mod.rs b/crates/libs/windows/src/Windows/Foundation/mod.rs
index 590f5a2830..8f78a6630a 100644
--- a/crates/libs/windows/src/Windows/Foundation/mod.rs
+++ b/crates/libs/windows/src/Windows/Foundation/mod.rs
@@ -2801,6 +2801,9 @@ impl<F: FnMut(::core::option::Option<&IAsyncAction>, AsyncStatus) -> ::windows_c
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncActionCompletedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -2878,6 +2881,9 @@ impl<TProgress: ::windows_core::RuntimeType + 'static, F: FnMut(::core::option::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncActionProgressHandler<TProgress> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -2958,6 +2964,9 @@ impl<TProgress: ::windows_core::RuntimeType + 'static, F: FnMut(::core::option::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncActionWithProgressCompletedHandler<TProgress> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3038,6 +3047,9 @@ impl<TResult: ::windows_core::RuntimeType + 'static, F: FnMut(::core::option::Op
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncOperationCompletedHandler<TResult> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3122,6 +3134,9 @@ impl<TResult: ::windows_core::RuntimeType + 'static, TProgress: ::windows_core::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncOperationProgressHandler<TResult, TProgress> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3207,6 +3222,9 @@ impl<TResult: ::windows_core::RuntimeType + 'static, TProgress: ::windows_core::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <AsyncOperationWithProgressCompletedHandler<TResult, TProgress> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3280,6 +3298,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DeferralCompletedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3357,6 +3378,9 @@ impl<T: ::windows_core::RuntimeType + 'static, F: FnMut(::core::option::Option<&
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <EventHandler<T> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -3441,6 +3465,9 @@ impl<TSender: ::windows_core::RuntimeType + 'static, TResult: ::windows_core::Ru
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <TypedEventHandler<TSender, TResult> as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Gaming/Preview/GamesEnumeration/mod.rs b/crates/libs/windows/src/Windows/Gaming/Preview/GamesEnumeration/mod.rs
index 5f44a27f43..198c443e74 100644
--- a/crates/libs/windows/src/Windows/Gaming/Preview/GamesEnumeration/mod.rs
+++ b/crates/libs/windows/src/Windows/Gaming/Preview/GamesEnumeration/mod.rs
@@ -849,6 +849,9 @@ impl<F: FnMut(::core::option::Option<&GameListEntry>) -> ::windows_core::Result<
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <GameListChangedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -916,6 +919,9 @@ impl<F: FnMut(&::windows_core::HSTRING) -> ::windows_core::Result<()> + ::core::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <GameListRemovedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Graphics/Display/mod.rs b/crates/libs/windows/src/Windows/Graphics/Display/mod.rs
index 0138aae6fb..914efd4603 100644
--- a/crates/libs/windows/src/Windows/Graphics/Display/mod.rs
+++ b/crates/libs/windows/src/Windows/Graphics/Display/mod.rs
@@ -1950,6 +1950,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>) -> ::window
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DisplayPropertiesEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Graphics/Printing/mod.rs b/crates/libs/windows/src/Windows/Graphics/Printing/mod.rs
index d43953eb37..888be7a4d6 100644
--- a/crates/libs/windows/src/Windows/Graphics/Printing/mod.rs
+++ b/crates/libs/windows/src/Windows/Graphics/Printing/mod.rs
@@ -2392,6 +2392,9 @@ impl<F: FnMut(::core::option::Option<&PrintTaskSourceRequestedArgs>) -> ::window
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <PrintTaskSourceRequestedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Graphics/Printing3D/mod.rs b/crates/libs/windows/src/Windows/Graphics/Printing3D/mod.rs
index 3c15de37ec..fb5a755c54 100644
--- a/crates/libs/windows/src/Windows/Graphics/Printing3D/mod.rs
+++ b/crates/libs/windows/src/Windows/Graphics/Printing3D/mod.rs
@@ -3068,6 +3068,9 @@ impl<F: FnMut(::core::option::Option<&Print3DTaskSourceRequestedArgs>) -> ::wind
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <Print3DTaskSourceRequestedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Media/Capture/mod.rs b/crates/libs/windows/src/Windows/Media/Capture/mod.rs
index 6ec87ff165..495703207c 100644
--- a/crates/libs/windows/src/Windows/Media/Capture/mod.rs
+++ b/crates/libs/windows/src/Windows/Media/Capture/mod.rs
@@ -10823,6 +10823,9 @@ impl<F: FnMut(::core::option::Option<&MediaCapture>, ::core::option::Option<&Med
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MediaCaptureFailedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -10893,6 +10896,9 @@ impl<F: FnMut(::core::option::Option<&MediaCapture>) -> ::windows_core::Result<(
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <RecordLimitationExceededEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Media/Devices/mod.rs b/crates/libs/windows/src/Windows/Media/Devices/mod.rs
index 2996c71c57..72e92dfb43 100644
--- a/crates/libs/windows/src/Windows/Media/Devices/mod.rs
+++ b/crates/libs/windows/src/Windows/Media/Devices/mod.rs
@@ -5870,6 +5870,9 @@ impl<F: FnMut(::core::option::Option<&CallControl>) -> ::windows_core::Result<()
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <CallControlEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -5941,6 +5944,9 @@ impl<F: FnMut(::core::option::Option<&CallControl>, ::core::option::Option<&Dial
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DialRequestedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6012,6 +6018,9 @@ impl<F: FnMut(::core::option::Option<&CallControl>, ::core::option::Option<&Keyp
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <KeypadPressedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6083,6 +6092,9 @@ impl<F: FnMut(::core::option::Option<&CallControl>, ::core::option::Option<&Redi
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <RedialRequestedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Media/Protection/mod.rs b/crates/libs/windows/src/Windows/Media/Protection/mod.rs
index c7334bdfac..a3e9bfbe78 100644
--- a/crates/libs/windows/src/Windows/Media/Protection/mod.rs
+++ b/crates/libs/windows/src/Windows/Media/Protection/mod.rs
@@ -1025,6 +1025,9 @@ impl<F: FnMut(::core::option::Option<&MediaProtectionManager>, ::core::option::O
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ComponentLoadFailedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1095,6 +1098,9 @@ impl<F: FnMut(::core::option::Option<&MediaProtectionManager>) -> ::windows_core
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <RebootNeededEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1166,6 +1172,9 @@ impl<F: FnMut(::core::option::Option<&MediaProtectionManager>, ::core::option::O
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ServiceRequestedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Networking/Connectivity/mod.rs b/crates/libs/windows/src/Windows/Networking/Connectivity/mod.rs
index 773eac2264..4806a8f622 100644
--- a/crates/libs/windows/src/Windows/Networking/Connectivity/mod.rs
+++ b/crates/libs/windows/src/Windows/Networking/Connectivity/mod.rs
@@ -3077,6 +3077,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>) -> ::window
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <NetworkStatusChangedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Networking/Proximity/mod.rs b/crates/libs/windows/src/Windows/Networking/Proximity/mod.rs
index 41fca96b10..0b0fcca67f 100644
--- a/crates/libs/windows/src/Windows/Networking/Proximity/mod.rs
+++ b/crates/libs/windows/src/Windows/Networking/Proximity/mod.rs
@@ -1166,6 +1166,9 @@ impl<F: FnMut(::core::option::Option<&ProximityDevice>) -> ::windows_core::Resul
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DeviceArrivedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1236,6 +1239,9 @@ impl<F: FnMut(::core::option::Option<&ProximityDevice>) -> ::windows_core::Resul
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DeviceDepartedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1307,6 +1313,9 @@ impl<F: FnMut(::core::option::Option<&ProximityDevice>, ::core::option::Option<&
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MessageReceivedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1377,6 +1386,9 @@ impl<F: FnMut(::core::option::Option<&ProximityDevice>, i64) -> ::windows_core::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MessageTransmittedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Security/Isolation/mod.rs b/crates/libs/windows/src/Windows/Security/Isolation/mod.rs
index 9deb9b6741..37ab588174 100644
--- a/crates/libs/windows/src/Windows/Security/Isolation/mod.rs
+++ b/crates/libs/windows/src/Windows/Security/Isolation/mod.rs
@@ -2402,6 +2402,9 @@ impl<F: FnMut(&::windows_core::GUID, ::core::option::Option<&super::super::Found
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <HostMessageReceivedCallback as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -2485,6 +2488,9 @@ impl<F: FnMut(&::windows_core::GUID, ::core::option::Option<&super::super::Found
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MessageReceivedCallback as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/Storage/mod.rs b/crates/libs/windows/src/Windows/Storage/mod.rs
index 183c0e3dbb..063151c983 100644
--- a/crates/libs/windows/src/Windows/Storage/mod.rs
+++ b/crates/libs/windows/src/Windows/Storage/mod.rs
@@ -6691,6 +6691,9 @@ impl<F: FnMut(::core::option::Option<&SetVersionRequest>) -> ::windows_core::Res
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ApplicationDataSetVersionHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6767,6 +6770,9 @@ impl<F: FnMut(::core::option::Option<&StreamedFileDataRequest>) -> ::windows_cor
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <StreamedFileDataRequestedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/System/RemoteDesktop/Input/mod.rs b/crates/libs/windows/src/Windows/System/RemoteDesktop/Input/mod.rs
index b7278abd78..26de519ba1 100644
--- a/crates/libs/windows/src/Windows/System/RemoteDesktop/Input/mod.rs
+++ b/crates/libs/windows/src/Windows/System/RemoteDesktop/Input/mod.rs
@@ -130,6 +130,9 @@ impl<F: FnMut(&[u8]) -> ::windows_core::Result<bool> + ::core::marker::Send + 's
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <RemoteTextConnectionDataHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/System/Threading/Core/mod.rs b/crates/libs/windows/src/Windows/System/Threading/Core/mod.rs
index 908a6aeb3a..ee21f88534 100644
--- a/crates/libs/windows/src/Windows/System/Threading/Core/mod.rs
+++ b/crates/libs/windows/src/Windows/System/Threading/Core/mod.rs
@@ -258,6 +258,9 @@ impl<F: FnMut(::core::option::Option<&SignalNotifier>, bool) -> ::windows_core::
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SignalHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/System/Threading/mod.rs b/crates/libs/windows/src/Windows/System/Threading/mod.rs
index 67749a34d2..44168d341c 100644
--- a/crates/libs/windows/src/Windows/System/Threading/mod.rs
+++ b/crates/libs/windows/src/Windows/System/Threading/mod.rs
@@ -345,6 +345,9 @@ impl<F: FnMut(::core::option::Option<&ThreadPoolTimer>) -> ::windows_core::Resul
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <TimerDestroyedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -415,6 +418,9 @@ impl<F: FnMut(::core::option::Option<&ThreadPoolTimer>) -> ::windows_core::Resul
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <TimerElapsedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -491,6 +497,9 @@ impl<F: FnMut(::core::option::Option<&super::super::Foundation::IAsyncAction>) -
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <WorkItemHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/System/mod.rs b/crates/libs/windows/src/Windows/System/mod.rs
index 351796e4ad..a4511338c7 100644
--- a/crates/libs/windows/src/Windows/System/mod.rs
+++ b/crates/libs/windows/src/Windows/System/mod.rs
@@ -6140,6 +6140,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DispatcherQueueHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/UI/ApplicationSettings/mod.rs b/crates/libs/windows/src/Windows/UI/ApplicationSettings/mod.rs
index b5ea41c562..bf5f08f41e 100644
--- a/crates/libs/windows/src/Windows/UI/ApplicationSettings/mod.rs
+++ b/crates/libs/windows/src/Windows/UI/ApplicationSettings/mod.rs
@@ -1255,6 +1255,9 @@ impl<F: FnMut(::core::option::Option<&CredentialCommand>) -> ::windows_core::Res
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <CredentialCommandCredentialDeletedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1326,6 +1329,9 @@ impl<F: FnMut(::core::option::Option<&WebAccountCommand>, ::core::option::Option
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <WebAccountCommandInvokedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -1396,6 +1402,9 @@ impl<F: FnMut(::core::option::Option<&WebAccountProviderCommand>) -> ::windows_c
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <WebAccountProviderCommandInvokedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/UI/Core/mod.rs b/crates/libs/windows/src/Windows/UI/Core/mod.rs
index 5ef8ce627c..5e48c7b2be 100644
--- a/crates/libs/windows/src/Windows/UI/Core/mod.rs
+++ b/crates/libs/windows/src/Windows/UI/Core/mod.rs
@@ -5579,6 +5579,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <DispatchedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -5649,6 +5652,9 @@ impl<F: FnMut(::core::option::Option<&IdleDispatchedHandlerArgs>) -> ::windows_c
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <IdleDispatchedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/UI/Popups/mod.rs b/crates/libs/windows/src/Windows/UI/Popups/mod.rs
index 53fe8cd826..bbae6beba4 100644
--- a/crates/libs/windows/src/Windows/UI/Popups/mod.rs
+++ b/crates/libs/windows/src/Windows/UI/Popups/mod.rs
@@ -626,6 +626,9 @@ impl<F: FnMut(::core::option::Option<&IUICommand>) -> ::windows_core::Result<()>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <UICommandInvokedHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/UI/WebUI/Core/mod.rs b/crates/libs/windows/src/Windows/UI/WebUI/Core/mod.rs
index 5ea3b9f468..cc00d79a2b 100644
--- a/crates/libs/windows/src/Windows/UI/WebUI/Core/mod.rs
+++ b/crates/libs/windows/src/Windows/UI/WebUI/Core/mod.rs
@@ -857,6 +857,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MenuClosedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -924,6 +927,9 @@ impl<F: FnMut() -> ::windows_core::Result<()> + ::core::marker::Send + 'static>
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <MenuOpenedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -994,6 +1000,9 @@ impl<F: FnMut(::core::option::Option<&WebUICommandBarSizeChangedEventArgs>) -> :
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SizeChangedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/libs/windows/src/Windows/UI/WebUI/mod.rs b/crates/libs/windows/src/Windows/UI/WebUI/mod.rs
index 03f84634dc..7d9d516396 100644
--- a/crates/libs/windows/src/Windows/UI/WebUI/mod.rs
+++ b/crates/libs/windows/src/Windows/UI/WebUI/mod.rs
@@ -6250,6 +6250,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ActivatedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6334,6 +6337,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <BackgroundActivatedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6418,6 +6424,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <EnteredBackgroundEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6502,6 +6511,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <LeavingBackgroundEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6580,6 +6592,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <NavigatedEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6650,6 +6665,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>) -> ::window
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <ResumingEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
@@ -6727,6 +6745,9 @@ impl<F: FnMut(::core::option::Option<&::windows_core::IInspectable>, ::core::opt
     };
     unsafe extern "system" fn QueryInterface(this: *mut ::core::ffi::c_void, iid: *const ::windows_core::GUID, interface: *mut *mut ::core::ffi::c_void) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <SuspendingEventHandler as ::windows_core::ComInterface>::IID || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID { &mut (*this).vtable as *mut _ as _ } else { ::core::ptr::null_mut() };
         if (*interface).is_null() {
             ::windows_core::HRESULT(-2147467262)
diff --git a/crates/tests/component/src/bindings.rs b/crates/tests/component/src/bindings.rs
index 4ba48a1b39..a327809a66 100644
--- a/crates/tests/component/src/bindings.rs
+++ b/crates/tests/component/src/bindings.rs
@@ -386,6 +386,9 @@ impl<F: FnMut(i32) -> ::windows_core::Result<i32> + ::core::marker::Send + 'stat
         interface: *mut *mut ::core::ffi::c_void,
     ) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <Callback as ::windows_core::ComInterface>::IID
             || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID
             || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID
diff --git a/crates/tests/component_client/src/bindings.rs b/crates/tests/component_client/src/bindings.rs
index ba52fcd11e..0d8d3b0aa0 100644
--- a/crates/tests/component_client/src/bindings.rs
+++ b/crates/tests/component_client/src/bindings.rs
@@ -354,6 +354,9 @@ impl<F: FnMut(i32) -> ::windows_core::Result<i32> + ::core::marker::Send + 'stat
         interface: *mut *mut ::core::ffi::c_void,
     ) -> ::windows_core::HRESULT {
         let this = this as *mut *mut ::core::ffi::c_void as *mut Self;
+        if iid.is_null() || interface.is_null() {
+            return ::windows_core::HRESULT(-2147467261);
+        }
         *interface = if *iid == <Callback as ::windows_core::ComInterface>::IID
             || *iid == <::windows_core::IUnknown as ::windows_core::ComInterface>::IID
             || *iid == <::windows_core::imp::IAgileObject as ::windows_core::ComInterface>::IID
diff --git a/crates/tests/implement/tests/query.rs b/crates/tests/implement/tests/query.rs
new file mode 100644
index 0000000000..dc01b93e33
--- /dev/null
+++ b/crates/tests/implement/tests/query.rs
@@ -0,0 +1,63 @@
+use windows::{core::*, Foundation::*, Win32::Foundation::*, Win32::System::WinRT::*};
+
+#[implement(IStringable)]
+struct Stringable;
+
+impl IStringable_Impl for Stringable {
+    fn ToString(&self) -> Result<HSTRING> {
+        todo!()
+    }
+}
+
+#[test]
+fn test() {
+    unsafe {
+        // This covers the four distinct implementations of QueryInterface.
+
+        let delegate: EventHandler<i32> = EventHandler::<i32>::new(move |_, _| todo!());
+        test_query(&delegate);
+
+        let interface: IStringable = Stringable.into();
+        test_query(&interface);
+
+        let source: IWeakReferenceSource = interface.cast().unwrap();
+        test_query(&source);
+
+        let weak = source.GetWeakReference().unwrap();
+        test_query(&weak);
+    }
+}
+
+fn test_query<I: ComInterface>(interface: &I) {
+    unsafe {
+        // Successful query
+        {
+            let mut unknown: Option<IUnknown> = None;
+            let hr = interface.query(&IUnknown::IID, &mut unknown as *mut _ as *mut _);
+            assert_eq!(hr, S_OK);
+            assert_eq!(interface.cast::<IUnknown>().unwrap(), unknown.unwrap());
+        }
+
+        // Unsuccessful query
+        {
+            let mut closable: Option<IClosable> = None;
+            let hr = interface.query(&IClosable::IID, &mut closable as *mut _ as *mut _);
+            assert_eq!(hr, E_NOINTERFACE);
+            assert_eq!(closable, None);
+        }
+
+        // iid param is null
+        {
+            let mut unknown: Option<IUnknown> = None;
+            let hr = interface.query(std::ptr::null(), &mut unknown as *mut _ as *mut _);
+            assert_eq!(hr, E_POINTER);
+            assert_eq!(unknown, None);
+        }
+
+        // interface param is null
+        {
+            let hr = interface.query(&IUnknown::IID, std::ptr::null_mut());
+            assert_eq!(hr, E_POINTER);
+        }
+    }
+}