diff --git a/src/BlazorWasmSdk/Targets/Microsoft.NET.Sdk.BlazorWebAssembly.Current.props b/src/BlazorWasmSdk/Targets/Microsoft.NET.Sdk.BlazorWebAssembly.Current.props
index 918aadc1a2f2..c655b35c2d73 100644
--- a/src/BlazorWasmSdk/Targets/Microsoft.NET.Sdk.BlazorWebAssembly.Current.props
+++ b/src/BlazorWasmSdk/Targets/Microsoft.NET.Sdk.BlazorWebAssembly.Current.props
@@ -30,6 +30,7 @@ Copyright (c) .NET Foundation. All rights reserved.
     <PublishTrimmed Condition="'$(PublishTrimmed)' == ''">true</PublishTrimmed>
     <TrimMode Condition="'$(TrimMode)' == ''">link</TrimMode>
     <TrimmerRemoveSymbols Condition="'$(TrimmerRemoveSymbols)' == ''">false</TrimmerRemoveSymbols>
+    <SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == ''">true</SuppressTrimAnalysisWarnings>
   </PropertyGroup>
 
   <Import Sdk="Microsoft.NET.Sdk.Razor" Project="Sdk.props" />
diff --git a/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ILLink.targets b/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ILLink.targets
index a4030ef89ec0..391bfd9e130e 100644
--- a/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ILLink.targets
+++ b/src/Tasks/Microsoft.NET.Build.Tasks/targets/Microsoft.NET.ILLink.targets
@@ -40,8 +40,13 @@ Copyright (c) .NET Foundation. All rights reserved.
     <CustomResourceTypesSupport>false</CustomResourceTypesSupport>
   </PropertyGroup>
 
-  <PropertyGroup Condition="'$(EnableTrimAnalyzer)' == 'true' or '$(PublishTrimmed)' == 'true'">
-    <SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == ''">true</SuppressTrimAnalysisWarnings>
+  <PropertyGroup Condition="'$(SuppressTrimAnalysisWarnings)' == '' And ('$(EnableTrimAnalyzer)' == 'true' Or '$(PublishTrimmed)' == 'true')">
+    <!-- Trim analysis warnings are suppressed for .NET < 6. -->
+    <SuppressTrimAnalysisWarnings Condition="$([MSBuild]::VersionLessThan('$(TargetFrameworkVersion)', '6.0'))">true</SuppressTrimAnalysisWarnings>
+    <!-- Suppress for WPF/WinForms -->
+    <SuppressTrimAnalysisWarnings Condition="'$(UseWpf)' == 'true' Or '$(UseWindowsForms)' == 'true'">true</SuppressTrimAnalysisWarnings>
+    <!-- Otherwise, for .NET 6+, warnings are on by default -->
+    <SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == ''">false</SuppressTrimAnalysisWarnings>
   </PropertyGroup>
 
   <!-- Suppress warnings produced by the linker or by the ILLink Roslyn analyzer. Warnings produced
@@ -178,14 +183,18 @@ Copyright (c) .NET Foundation. All rights reserved.
       <ILLinkWarningLevel Condition=" '$(ILLinkWarningLevel)' == '' ">0</ILLinkWarningLevel>
     </PropertyGroup>
 
-    <PropertyGroup>
-      <ILLinkTreatWarningsAsErrors Condition=" '$(ILLinkTreatWarningsAsErrors)' == '' ">$(TreatWarningsAsErrors)</ILLinkTreatWarningsAsErrors>
-      <_ExtraTrimmerArgs>--skip-unresolved true $(_ExtraTrimmerArgs)</_ExtraTrimmerArgs>
+    <!-- Defaults for .NET < 6 -->
+    <PropertyGroup Condition=" $([MSBuild]::VersionLessThan('$(TargetFrameworkVersion)', '6.0')) ">
       <TrimMode Condition=" '$(TrimMode)' == '' ">copyused</TrimMode>
-      <!-- For .NET < 6, the defaults are the same regardless of whether the assembly has an IsTrimmable attribute. (The attribute didn't exist until .NET 6.) -->
-      <_TrimmerDefaultAction Condition=" $([MSBuild]::VersionLessThan('$(TargetFrameworkVersion)', '6.0')) ">$(TrimMode)</_TrimmerDefaultAction>
+      <!-- Action is the same regardless of whether the assembly has an IsTrimmable attribute. (The attribute didn't exist until .NET 6.) -->
+      <_TrimmerDefaultAction>$(TrimMode)</_TrimmerDefaultAction>
+    </PropertyGroup>
+    <PropertyGroup>
+      <TrimMode Condition=" '$(TrimMode)' == '' ">link</TrimMode>
       <!-- For .NET 6+, assemblies without IsTrimmable attribute get the "copy" action. -->
       <_TrimmerDefaultAction Condition=" '$(_TrimmerDefaultAction)' == '' ">copy</_TrimmerDefaultAction>
+      <ILLinkTreatWarningsAsErrors Condition=" '$(ILLinkTreatWarningsAsErrors)' == '' ">$(TreatWarningsAsErrors)</ILLinkTreatWarningsAsErrors>
+      <_ExtraTrimmerArgs>--skip-unresolved true $(_ExtraTrimmerArgs)</_ExtraTrimmerArgs>
     </PropertyGroup>
     
     <!-- Suppress warnings produced by the linker. Any warnings shared with the analyzer should be
diff --git a/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs b/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs
index 6c318dda2f11..acb97cfc242b 100644
--- a/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs
+++ b/src/Tests/Microsoft.NET.Publish.Tests/GivenThatWeWantToRunILLink.cs
@@ -119,7 +119,7 @@ public void ILLink_links_simple_app_without_analysis_warnings_and_it_runs(string
             var testAsset = _testAssetsManager.CreateTestProject(testProject);
 
             var publishCommand = new PublishCommand(testAsset);
-            publishCommand.Execute($"/p:RuntimeIdentifier={rid}", "/p:SelfContained=true", "/p:PublishTrimmed=true", $"/p:TrimMode={trimMode}")
+            publishCommand.Execute($"/p:RuntimeIdentifier={rid}", "/p:SelfContained=true", "/p:PublishTrimmed=true", $"/p:TrimMode={trimMode}", "/p:SuppressTrimAnalysisWarnings=true")
                 .Should().Pass()
                 .And.NotHaveStdOutContaining("warning IL2075")
                 .And.NotHaveStdOutContaining("warning IL2026");
@@ -184,9 +184,9 @@ public void PrepareForILLink_can_set_TrimMode(string targetFramework)
         }
 
         [RequiresMSBuildVersionTheory("16.8.0")]
-        [InlineData("net5.0")]
-        [InlineData("net6.0")]
-        public void ILLink_respects_global_TrimMode(string targetFramework)
+        [InlineData("net5.0", "link")]
+        [InlineData("net6.0", "copyused")]
+        public void ILLink_respects_global_TrimMode(string targetFramework, string trimMode)
         {
             var projectName = "HelloWorld";
             var referenceProjectName = "ClassLibForILLink";
@@ -194,7 +194,7 @@ public void ILLink_respects_global_TrimMode(string targetFramework)
 
             var testProject = CreateTestProjectForILLinkTesting(targetFramework, projectName, referenceProjectName);
             var testAsset = _testAssetsManager.CreateTestProject(testProject)
-                .WithProjectChanges(project => SetGlobalTrimMode(project, "link"))
+                .WithProjectChanges(project => SetGlobalTrimMode(project, trimMode))
                 .WithProjectChanges(project => SetIsTrimmable(project, referenceProjectName))
                 .WithProjectChanges(project => AddRootDescriptor(project, $"{referenceProjectName}.xml"));
 
@@ -208,9 +208,14 @@ public void ILLink_respects_global_TrimMode(string targetFramework)
 
             File.Exists(publishedDll).Should().BeTrue();
             File.Exists(isTrimmableDll).Should().BeTrue();
-            // Check that the assembly was trimmed at the member level
             DoesImageHaveMethod(isTrimmableDll, "UnusedMethodToRoot").Should().BeTrue();
-            DoesImageHaveMethod(isTrimmableDll, "UnusedMethod").Should().BeFalse();
+            if (trimMode == "link") {
+                // Check that the assembly was trimmed at the member level
+                DoesImageHaveMethod(isTrimmableDll, "UnusedMethod").Should().BeFalse();
+            } else {
+                // Check that the assembly was trimmed at the assembxly level
+                DoesImageHaveMethod(isTrimmableDll, "UnusedMethod").Should().BeTrue();
+            }
         }
 
         [RequiresMSBuildVersionTheory("16.8.0")]
@@ -317,8 +322,7 @@ public void ILLink_TrimMode_applies_to_IsTrimmable_assemblies(string targetFrame
             string projectName = "HelloWorld";
             var rid = EnvironmentInfo.GetCompatibleRid(targetFramework);
             var testProject = CreateTestProjectWithIsTrimmableAttributes(targetFramework, projectName);
-            var testAsset = _testAssetsManager.CreateTestProject(testProject)
-                .WithProjectChanges(project => SetGlobalTrimMode(project, "link"));
+            var testAsset = _testAssetsManager.CreateTestProject(testProject);
 
             var publishCommand = new PublishCommand(testAsset);
             publishCommand.Execute($"/p:RuntimeIdentifier={rid}").Should().Pass();
@@ -359,8 +363,8 @@ public void ILLink_can_set_TrimmerDefaultAction(string targetFramework)
             var unusedTrimmableDll = Path.Combine(publishDirectory, "UnusedTrimmableAssembly.dll");
             var unusedNonTrimmableDll = Path.Combine(publishDirectory, "UnusedNonTrimmableAssembly.dll");
 
-            // Trimmable assemblies are trimmed at assembly level
-            DoesImageHaveMethod(trimmableDll, "UnusedMethod").Should().BeTrue();
+            // Trimmable assemblies are trimmed at member level
+            DoesImageHaveMethod(trimmableDll, "UnusedMethod").Should().BeFalse();
             File.Exists(unusedTrimmableDll).Should().BeFalse();
             // Unattributed assemblies are trimmed at member level
             DoesImageHaveMethod(nonTrimmableDll, "UnusedMethod").Should().BeFalse();
@@ -389,6 +393,28 @@ public void ILLink_analysis_warnings_are_disabled_by_default(string targetFramew
                 .And.NotHaveStdOutContaining("warning IL2093");
         }
 
+        [RequiresMSBuildVersionTheory("16.8.0")]
+        [InlineData("net6.0")]
+        public void ILLink_analysis_warnings_are_enabled_by_default(string targetFramework)
+        {
+            var projectName = "AnalysisWarnings";
+            var rid = EnvironmentInfo.GetCompatibleRid(targetFramework);
+
+            var testProject = CreateTestProjectWithAnalysisWarnings(targetFramework, projectName);
+            testProject.AdditionalProperties["PublishTrimmed"] = "true";
+            var testAsset = _testAssetsManager.CreateTestProject(testProject);
+
+            var publishCommand = new PublishCommand(testAsset);
+            publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true")
+                .Should().Pass()
+                // trim analysis warnings are enabled
+                .And.HaveStdOutMatching("warning IL2075.*Program.IL_2075")
+                .And.HaveStdOutMatching("warning IL2026.*Program.IL_2026.*Testing analysis warning IL2026")
+                .And.HaveStdOutMatching("warning IL2043.*Program.IL_2043.get")
+                .And.HaveStdOutMatching("warning IL2046.*Program.Derived.IL_2046")
+                .And.HaveStdOutMatching("warning IL2093.*Program.Derived.IL_2093");
+        }
+
         [RequiresMSBuildVersionTheory("16.8.0")]
         [InlineData("net5.0")]
         public void ILLink_accepts_option_to_enable_analysis_warnings(string targetFramework)
@@ -411,6 +437,28 @@ public void ILLink_accepts_option_to_enable_analysis_warnings(string targetFrame
                 .And.HaveStdOutMatching("warning IL2093.*Program.Derived.IL_2093");
         }
 
+        [RequiresMSBuildVersionTheory("16.8.0")]
+        [InlineData("net6.0")]
+        public void ILLink_accepts_option_to_disable_analysis_warnings(string targetFramework)
+        {
+            var projectName = "AnalysisWarnings";
+            var rid = EnvironmentInfo.GetCompatibleRid(targetFramework);
+
+            var testProject = CreateTestProjectWithAnalysisWarnings(targetFramework, projectName);
+            testProject.AdditionalProperties["PublishTrimmed"] = "true";
+            testProject.AdditionalProperties["SuppressTrimAnalysisWarnings"] = "true";
+            var testAsset = _testAssetsManager.CreateTestProject(testProject);
+
+            var publishCommand = new PublishCommand(testAsset);
+            publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true")
+                .Should().Pass()
+                .And.NotHaveStdOutContaining("warning IL2075")
+                .And.NotHaveStdOutContaining("warning IL2026")
+                .And.NotHaveStdOutContaining("warning IL2043")
+                .And.NotHaveStdOutContaining("warning IL2046")
+                .And.NotHaveStdOutContaining("warning IL2093");
+        }
+
         [RequiresMSBuildVersionTheory("16.8.0")]
         [InlineData("net5.0")]
         public void ILLink_accepts_option_to_enable_analysis_warnings_without_PublishTrimmed(string targetFramework)
@@ -487,7 +535,7 @@ public void ILLink_verify_analysis_warnings_hello_world_app_trim_mode_copyused(s
             var testAsset = _testAssetsManager.CreateTestProject(testProject);
 
             var publishCommand = new PublishCommand(Log, Path.Combine(testAsset.TestRoot, testProject.Name));
-            var result = publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true", "/p:PublishTrimmed=true", "/p:SuppressTrimAnalysisWarnings=false");
+            var result = publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true", "/p:PublishTrimmed=true", "/p:TrimMode=copyused");
             result.Should().Pass();
             ValidateWarningsOnHelloWorldApp(publishCommand, result, expectedOutput, targetFramework, rid);
         }
@@ -512,7 +560,7 @@ public void ILLink_verify_analysis_warnings_hello_world_app_trim_mode_link(strin
             var testAsset = _testAssetsManager.CreateTestProject(testProject);
 
             var publishCommand = new PublishCommand(Log, Path.Combine(testAsset.TestRoot, testProject.Name));
-            var result = publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true", "/p:PublishTrimmed=true", "/p:SuppressTrimAnalysisWarnings=false", "/p:TrimMode=link");
+            var result = publishCommand.Execute($"/p:RuntimeIdentifier={rid}", $"/p:SelfContained=true", "/p:PublishTrimmed=true");
             result.Should().Pass();
             ValidateWarningsOnHelloWorldApp(publishCommand, result, expectedOutput, targetFramework, rid);
         }
diff --git a/src/WebSdk/Web/Sdk/Sdk.props b/src/WebSdk/Web/Sdk/Sdk.props
index d695147620bd..b347b54e3701 100644
--- a/src/WebSdk/Web/Sdk/Sdk.props
+++ b/src/WebSdk/Web/Sdk/Sdk.props
@@ -21,6 +21,7 @@ Copyright (c) .NET Foundation. All rights reserved.
   <!-- Default properties that shouldn't be replaced by the microsoft.net.sdk.props -->
   <PropertyGroup>
     <DebugSymbols Condition="'$(DebugSymbols)' == ''">true</DebugSymbols>
+    <SuppressTrimAnalysisWarnings Condition="'$(SuppressTrimAnalysisWarnings)' == ''">true</SuppressTrimAnalysisWarnings>
   </PropertyGroup>
 
   <Import Sdk="Microsoft.NET.Sdk" Project="Sdk.props" />