diff --git a/.teamcity/scripts/provider_tests/acceptance_tests.sh b/.teamcity/scripts/provider_tests/acceptance_tests.sh
index 86f8286a2d5..2329d81f456 100644
--- a/.teamcity/scripts/provider_tests/acceptance_tests.sh
+++ b/.teamcity/scripts/provider_tests/acceptance_tests.sh
@@ -61,4 +61,4 @@ TF_ACC=1 go test \
     ./internal/types/... \
     ./internal/vault/... \
     ./internal/verify/... \
-    -json -v -count=1 -parallel "%ACCTEST_PARALLELISM%" -timeout=0 -run=TestAcc
+    -json -count=1 -parallel "%ACCTEST_PARALLELISM%" -timeout=0 -run=TestAcc
diff --git a/.teamcity/scripts/service_tests/acceptance_tests.sh b/.teamcity/scripts/service_tests/acceptance_tests.sh
index e8a14f220b1..07fabf7e88c 100644
--- a/.teamcity/scripts/service_tests/acceptance_tests.sh
+++ b/.teamcity/scripts/service_tests/acceptance_tests.sh
@@ -4,6 +4,7 @@ set -euo pipefail
 
 TEST_LIST=$(./test-binary -test.list="%TEST_PATTERN%" 2>/dev/null)
 
+# shellcheck disable=2157 # This isn't a constant string, it's a TeamCity variable substitution
 if [[ -n "%TEST_EXCLUDE_PATTERN%" ]]; then
   TEST_LIST=$(echo "${TEST_LIST}" | grep -vE "%TEST_EXCLUDE_PATTERN%")
 fi
diff --git a/internal/generate/teamcity/acceptance_tests.tmpl b/internal/generate/teamcity/acceptance_tests.tmpl
index f56c31641a5..d14b7912861 100644
--- a/internal/generate/teamcity/acceptance_tests.tmpl
+++ b/internal/generate/teamcity/acceptance_tests.tmpl
@@ -36,4 +36,4 @@ TF_ACC=1 go test \
 {{- range . }}
     ./internal/{{ . }}/... \
 {{- end }}
-    -json -v -count=1 -parallel "%ACCTEST_PARALLELISM%" -timeout=0 -run=TestAcc
+    -json -count=1 -parallel "%ACCTEST_PARALLELISM%" -timeout=0 -run=TestAcc
diff --git a/internal/provider/provider_acc_test.go b/internal/provider/provider_acc_test.go
index fd0e8e9b169..31fbf4d51b7 100644
--- a/internal/provider/provider_acc_test.go
+++ b/internal/provider/provider_acc_test.go
@@ -8,7 +8,6 @@ import (
 	"errors"
 	"fmt"
 	"reflect"
-	"strings"
 	"testing"
 
 	"github.com/aws/aws-sdk-go-v2/aws"
@@ -159,32 +158,6 @@ func TestAccProvider_DefaultAndIgnoreTags_emptyBlocks(t *testing.T) {
 	})
 }
 
-func TestAccProvider_endpoints(t *testing.T) {
-	ctx := acctest.Context(t)
-	var provider *schema.Provider
-	var endpoints strings.Builder
-
-	// Initialize each endpoint configuration with matching name and value
-	for _, serviceKey := range names.ProviderPackages() {
-		endpoints.WriteString(fmt.Sprintf("%s = \"http://%s\"\n", serviceKey, serviceKey))
-	}
-
-	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:                 func() { acctest.PreCheck(ctx, t) },
-		ErrorCheck:               acctest.ErrorCheck(t),
-		ProtoV5ProviderFactories: testAccProtoV5ProviderFactoriesInternal(ctx, t, &provider),
-		CheckDestroy:             nil,
-		Steps: []resource.TestStep{
-			{
-				Config: testAccProviderConfig_endpoints(endpoints.String()),
-				Check: resource.ComposeTestCheckFunc(
-					testAccCheckEndpoints(ctx, &provider),
-				),
-			},
-		},
-	})
-}
-
 func TestAccProvider_customEndpoint(t *testing.T) {
 	ctx := acctest.Context(t)
 	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
@@ -508,6 +481,9 @@ func TestAccProvider_IgnoreTagsKeyPrefixes_envVarMerged(t *testing.T) {
 }
 
 func TestAccProvider_Region_c2s(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -531,6 +507,9 @@ func TestAccProvider_Region_c2s(t *testing.T) {
 }
 
 func TestAccProvider_Region_china(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -554,6 +533,9 @@ func TestAccProvider_Region_china(t *testing.T) {
 }
 
 func TestAccProvider_Region_commercial(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -577,6 +559,9 @@ func TestAccProvider_Region_commercial(t *testing.T) {
 }
 
 func TestAccProvider_Region_govCloud(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -600,6 +585,9 @@ func TestAccProvider_Region_govCloud(t *testing.T) {
 }
 
 func TestAccProvider_Region_sc2s(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -623,6 +611,9 @@ func TestAccProvider_Region_sc2s(t *testing.T) {
 }
 
 func TestAccProvider_Region_stsRegion(t *testing.T) {
+	// When using `AWS_PROFILE` for authentication, `skip_credentials_validation` is ignored
+	// https://github.com/hashicorp/aws-sdk-go-base/issues/453
+	t.Skip()
 	ctx := acctest.Context(t)
 	var provider *schema.Provider
 
@@ -983,55 +974,6 @@ func testAccCheckProviderDefaultTags_Tags(ctx context.Context, t *testing.T, p *
 	}
 }
 
-func testAccCheckEndpoints(_ context.Context, p **schema.Provider) resource.TestCheckFunc {
-	return func(s *terraform.State) error {
-		if p == nil || *p == nil || (*p).Meta() == nil || (*p).Meta().(*conns.AWSClient) == nil {
-			return fmt.Errorf("provider not initialized")
-		}
-
-		providerClient := (*p).Meta().(*conns.AWSClient)
-
-		for _, serviceKey := range names.Aliases() {
-			methodName := serviceClient(serviceKey)
-			method := reflect.ValueOf(providerClient).MethodByName(methodName)
-			if !method.IsValid() {
-				continue
-			}
-			if method.Kind() != reflect.Func {
-				return fmt.Errorf("value %q is not a function", methodName)
-			}
-			if !funcHasConnFuncSignature(method) {
-				return fmt.Errorf("function %q does not match expected signature", methodName)
-			}
-
-			result := method.Call([]reflect.Value{
-				reflect.ValueOf(context.Background()),
-			})
-			if l := len(result); l != 1 {
-				return fmt.Errorf("expected 1 result, got %d", l)
-			}
-			providerClientField := result[0]
-
-			if !providerClientField.IsValid() {
-				return fmt.Errorf("unable to match conns.AWSClient struct field name for endpoint name: %s", serviceKey)
-			}
-
-			if !reflect.Indirect(providerClientField).FieldByName("Config").IsValid() {
-				continue // currently unknown how to do this check for v2 clients
-			}
-
-			actualEndpoint := reflect.Indirect(reflect.Indirect(providerClientField).FieldByName("Config").FieldByName("Endpoint")).String()
-			expectedEndpoint := fmt.Sprintf("http://%s", serviceKey)
-
-			if actualEndpoint != expectedEndpoint {
-				return fmt.Errorf("expected endpoint (%s) value (%s), got: %s", serviceKey, expectedEndpoint, actualEndpoint)
-			}
-		}
-
-		return nil
-	}
-}
-
 func testAccCheckUnusualEndpoints(_ context.Context, p **schema.Provider, unusual unusualEndpoint) resource.TestCheckFunc {
 	return func(s *terraform.State) error {
 		if p == nil || *p == nil || (*p).Meta() == nil || (*p).Meta().(*conns.AWSClient) == nil {
@@ -1117,21 +1059,6 @@ data "aws_service" "provider_test" {
 }
 `
 
-func testAccProviderConfig_endpoints(endpoints string) string {
-	//lintignore:AT004
-	return acctest.ConfigCompose(testAccProviderConfig_base, fmt.Sprintf(`
-provider "aws" {
-  skip_credentials_validation = true
-  skip_metadata_api_check     = true
-  skip_requesting_account_id  = true
-
-  endpoints {
-    %[1]s
-  }
-}
-`, endpoints))
-}
-
 func testAccProviderConfig_customS3Endpoint(endpoint, rName string) string {
 	//lintignore:AT004
 	return acctest.ConfigCompose(testAccProviderConfig_base, fmt.Sprintf(`