diff --git a/src/AspNetCore/AspNetCore/src/Authorization/ServiceCollectionExtensions.cs b/src/AspNetCore/AspNetCore/src/Authorization/ServiceCollectionExtensions.cs
index 0cfea43..6dfe9aa 100644
--- a/src/AspNetCore/AspNetCore/src/Authorization/ServiceCollectionExtensions.cs
+++ b/src/AspNetCore/AspNetCore/src/Authorization/ServiceCollectionExtensions.cs
@@ -16,8 +16,7 @@ public static class ServiceCollectionExtensions
         /// <exception cref="ArgumentNullException"></exception>
         public static void AddAjaxServices(this IServiceCollection services)
         {
-            if (services == null)
-                throw new ArgumentNullException(nameof(services));
+            ArgumentNullException.ThrowIfNull(services);
 
             // Register the 401/403 handler
             services.AddTransient<IAuthorizationMiddlewareResultHandler, AjaxAuthorizationMiddlewareResultHandler>();
diff --git a/src/AspNetCore/Authentication/Authentication/src/InMemoryUserSessionStore.cs b/src/AspNetCore/Authentication/Authentication/src/InMemoryUserSessionStore.cs
index 34f9d19..3a18dc1 100644
--- a/src/AspNetCore/Authentication/Authentication/src/InMemoryUserSessionStore.cs
+++ b/src/AspNetCore/Authentication/Authentication/src/InMemoryUserSessionStore.cs
@@ -13,8 +13,7 @@ public class InMemoryUserSessionStore : IUserSessionStore
 
         public Task<UserSession?> GetAsync(string key, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
+            ArgumentNullException.ThrowIfNull(key);
 
             token.ThrowIfCancellationRequested();
 
@@ -35,8 +34,7 @@ public class InMemoryUserSessionStore : IUserSessionStore
 
         public Task AddAsync(UserSession session, CancellationToken token = default)
         {
-            if (session == null)
-                throw new ArgumentNullException(nameof(session));
+            ArgumentNullException.ThrowIfNull(session);
 
             token.ThrowIfCancellationRequested();
 
@@ -47,11 +45,8 @@ public Task AddAsync(UserSession session, CancellationToken token = default)
 
         public Task UpdateAsync(string key, UserSession session, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
-
-            if (session == null)
-                throw new ArgumentNullException(nameof(session));
+            ArgumentNullException.ThrowIfNull(key);
+            ArgumentNullException.ThrowIfNull(session);
 
             token.ThrowIfCancellationRequested();
 
@@ -62,8 +57,7 @@ public Task UpdateAsync(string key, UserSession session, CancellationToken token
 
         public Task DeleteAsync(string key, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
+            ArgumentNullException.ThrowIfNull(key);
 
             token.ThrowIfCancellationRequested();
 
@@ -74,8 +68,7 @@ public Task DeleteAsync(string key, CancellationToken token = default)
 
         public Task DeleteBySessionIdAsync(string sessionId, CancellationToken token = default)
         {
-            if (sessionId == null)
-                throw new ArgumentNullException(nameof(sessionId));
+            ArgumentNullException.ThrowIfNull(sessionId);
 
             token.ThrowIfCancellationRequested();
 
diff --git a/src/AspNetCore/Authentication/Authentication/src/Infrastructure/UserSessionTicketStore.cs b/src/AspNetCore/Authentication/Authentication/src/Infrastructure/UserSessionTicketStore.cs
index 2b1f38b..aec0bc0 100644
--- a/src/AspNetCore/Authentication/Authentication/src/Infrastructure/UserSessionTicketStore.cs
+++ b/src/AspNetCore/Authentication/Authentication/src/Infrastructure/UserSessionTicketStore.cs
@@ -77,8 +77,7 @@ private UserSession CreateUserSession(string key, AuthenticationTicket ticket)
             if (string.IsNullOrWhiteSpace(key))
                 throw new InvalidOperationException("Invalid key");
 
-            if (ticket == null)
-                throw new ArgumentNullException(nameof(ticket));
+            ArgumentNullException.ThrowIfNull(ticket);
 
             var subject = ticket.Principal.FindFirst(JwtClaimTypes.Subject)?.Value;
             var sessionId = ticket.Principal.FindFirst(JwtClaimTypes.SessionId)?.Value;
diff --git a/src/AspNetCore/Authentication/Authentication/src/ServiceCollectionExtensions.cs b/src/AspNetCore/Authentication/Authentication/src/ServiceCollectionExtensions.cs
index 6249d43..25e1b7e 100644
--- a/src/AspNetCore/Authentication/Authentication/src/ServiceCollectionExtensions.cs
+++ b/src/AspNetCore/Authentication/Authentication/src/ServiceCollectionExtensions.cs
@@ -23,11 +23,8 @@ public static OpenIdConnectSessionHandlerBuilder AddOpenIdConnectSessionHandler(
             this IServiceCollection services,
             Action<OpenIdConnectSessionHandlerOptions> configure)
         {
-            if (services == null)
-                throw new ArgumentNullException(nameof(services));
-
-            if (configure == null)
-                throw new ArgumentNullException(nameof(configure));
+            ArgumentNullException.ThrowIfNull(services);
+            ArgumentNullException.ThrowIfNull(configure);
 
             services.AddOptions<OpenIdConnectSessionHandlerOptions>()
                 .Validate(o =>
diff --git a/src/AspNetCore/Authentication/StackExchangeRedis/src/BuilderExtensions.cs b/src/AspNetCore/Authentication/StackExchangeRedis/src/BuilderExtensions.cs
index f48760f..599c1e0 100644
--- a/src/AspNetCore/Authentication/StackExchangeRedis/src/BuilderExtensions.cs
+++ b/src/AspNetCore/Authentication/StackExchangeRedis/src/BuilderExtensions.cs
@@ -16,11 +16,8 @@ public static OpenIdConnectSessionHandlerBuilder AddStackExchangeRedisUserSessio
             this OpenIdConnectSessionHandlerBuilder builder,
             Action<RedisUserSessionCacheOptions> configure)
         {
-            if (builder == null)
-                throw new ArgumentNullException(nameof(builder));
-
-            if (configure == null)
-                throw new ArgumentNullException(nameof(configure));
+            ArgumentNullException.ThrowIfNull(builder);
+            ArgumentNullException.ThrowIfNull(configure);
 
             builder.Services.AddOptions<RedisUserSessionCacheOptions>()
                 .Validate(o =>
diff --git a/src/AspNetCore/Authentication/StackExchangeRedis/src/RedisUserSessionStore.cs b/src/AspNetCore/Authentication/StackExchangeRedis/src/RedisUserSessionStore.cs
index 0165fef..d86dc3d 100644
--- a/src/AspNetCore/Authentication/StackExchangeRedis/src/RedisUserSessionStore.cs
+++ b/src/AspNetCore/Authentication/StackExchangeRedis/src/RedisUserSessionStore.cs
@@ -14,12 +14,11 @@ public class RedisUserSessionStore : IUserSessionStore
 
         public RedisUserSessionStore(IOptions<RedisUserSessionCacheOptions> cacheOptions)
         {
-            if (cacheOptions == null) throw new ArgumentNullException(nameof(cacheOptions));
+            ArgumentNullException.ThrowIfNull(cacheOptions);
 
             var options = cacheOptions.Value;
 
             if (options == null) throw new ArgumentException("Options cannot be null");
-
             if (options.Connection == null) throw new ArgumentException("Connection cannot be null");
 
             _database = options.Connection.GetDatabase();
@@ -32,8 +31,7 @@ public RedisUserSessionStore(IOptions<RedisUserSessionCacheOptions> cacheOptions
 
         public async Task AddAsync(UserSession session, CancellationToken token = default)
         {
-            if (session == null)
-                throw new ArgumentNullException(nameof(session));
+            ArgumentNullException.ThrowIfNull(session);
 
             token.ThrowIfCancellationRequested();
 
@@ -47,11 +45,8 @@ public async Task AddAsync(UserSession session, CancellationToken token = defaul
 
         public async Task UpdateAsync(string key, UserSession session, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
-
-            if (session == null)
-                throw new ArgumentNullException(nameof(session));
+            ArgumentNullException.ThrowIfNull(key);
+            ArgumentNullException.ThrowIfNull(session);
 
             token.ThrowIfCancellationRequested();
 
@@ -70,8 +65,7 @@ public async Task UpdateAsync(string key, UserSession session, CancellationToken
 
         public async Task DeleteAsync(string key, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
+            ArgumentNullException.ThrowIfNull(key);
 
             token.ThrowIfCancellationRequested();
 
@@ -87,8 +81,7 @@ public async Task DeleteAsync(string key, CancellationToken token = default)
 
         public async Task DeleteBySessionIdAsync(string sessionId, CancellationToken token = default)
         {
-            if (sessionId == null)
-                throw new ArgumentNullException(nameof(sessionId));
+            ArgumentNullException.ThrowIfNull(sessionId);
 
             token.ThrowIfCancellationRequested();
 
@@ -108,8 +101,7 @@ public async Task DeleteBySessionIdAsync(string sessionId, CancellationToken tok
 
         private async Task<UserSession?> GetInternalAsync(string key, CancellationToken token = default)
         {
-            if (key == null)
-                throw new ArgumentNullException(nameof(key));
+            ArgumentNullException.ThrowIfNull(key);
 
             token.ThrowIfCancellationRequested();