diff --git a/eng/liveBuilds.targets b/eng/liveBuilds.targets
index e602f23f060464..2d6ec5066fdb83 100644
--- a/eng/liveBuilds.targets
+++ b/eng/liveBuilds.targets
@@ -233,22 +233,31 @@
 
       <LibrariesRuntimeFiles Condition="'$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'"
                              Include="
-        $(CoreCLRSharedFrameworkDir)libcoreclr_static.a;
-        $(CoreCLRSharedFrameworkDir)libcoreclrminipal.a;
-        $(CoreCLRSharedFrameworkDir)libcoreclrpal.a;
-        $(CoreCLRSharedFrameworkDir)libgcinfo_unix_wasm.a;
-        $(CoreCLRSharedFrameworkDir)libnativeresourcestring.a;
         $(LibrariesSharedFrameworkDir)package.json;
         $(LibrariesSharedFrameworkDir)dotnet.d.ts;
         $(LibrariesSharedFrameworkDir)*.map;
         $(LibrariesSharedFrameworkDir)*.js;
-        $(LibrariesSharedFrameworkDir)*.a;
         $(LibrariesSharedFrameworkDir)*.dat;
         $(HostSharedFrameworkDir)libBrowserHost.a;
         $(HostSharedFrameworkDir)dotnet.native.js;
+        $(HostSharedFrameworkDir)dotnet.native.js.symbols;
         $(HostSharedFrameworkDir)dotnet.native.wasm;
+        $(RepoRoot)src\native\libs\System.Native.Browser\libSystem.Native.Browser.extpost.js;
         "
         IsNative="true" />
+      <!-- Include .a files from LibrariesSharedFrameworkDir, excluding those already in CoreCLRSharedFrameworkDir (added via RuntimeFiles) -->
+      <LibrariesRuntimeFiles Condition="'$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'"
+                             Include="$(LibrariesSharedFrameworkDir)*.a"
+                             Exclude="
+        $(LibrariesSharedFrameworkDir)libminipal.a;
+        $(LibrariesSharedFrameworkDir)libSystem.IO.Compression.Native.a;
+        $(LibrariesSharedFrameworkDir)libz.a"
+                             IsNative="true" />
+
+      <LibrariesRuntimeFiles Condition="'$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'CoreCLR'"
+                             Include="$(HostSharedFrameworkDir)include\**"
+                             NativeSubDirectory="include\"
+                             IsNative="true" />
 
       <LibrariesRuntimeFiles Condition="'$(TargetOS)' == 'browser' and '$(RuntimeFlavor)' == 'Mono'"
                              Include="
diff --git a/eng/testing/scenarios/BuildWasmAppsJobsListCoreCLR.txt b/eng/testing/scenarios/BuildWasmAppsJobsListCoreCLR.txt
index 8cf543448b73fe..20478d350819c5 100644
--- a/eng/testing/scenarios/BuildWasmAppsJobsListCoreCLR.txt
+++ b/eng/testing/scenarios/BuildWasmAppsJobsListCoreCLR.txt
@@ -2,6 +2,10 @@ Wasm.Build.Tests.DebugLevelTests
 Wasm.Build.Tests.EnvVariablesTests
 Wasm.Build.Tests.FilesToIncludeInFileSystemTests
 Wasm.Build.Tests.HttpTests
+Wasm.Build.Tests.IcuShardingTests
+Wasm.Build.Tests.IcuShardingTests2
+Wasm.Build.Tests.IcuTests
+Wasm.Build.Tests.InvariantGlobalizationTests
 Wasm.Build.Tests.LazyLoadingTests
 Wasm.Build.Tests.ModuleConfigTests
 Wasm.Build.Tests.PreloadingTests
diff --git a/src/installer/pkg/sfx/Microsoft.NETCore.App/Directory.Build.props b/src/installer/pkg/sfx/Microsoft.NETCore.App/Directory.Build.props
index 52fcfcf860bbf9..c3ae76790d25c6 100644
--- a/src/installer/pkg/sfx/Microsoft.NETCore.App/Directory.Build.props
+++ b/src/installer/pkg/sfx/Microsoft.NETCore.App/Directory.Build.props
@@ -278,6 +278,11 @@
     <PlatformManifestFileEntry Include="libSystem.Native.Browser.js.map" IsNative="true" />
     <PlatformManifestFileEntry Include="libSystem.Runtime.InteropServices.JavaScript.Native.js" IsNative="true" />
     <PlatformManifestFileEntry Include="libSystem.Runtime.InteropServices.JavaScript.Native.js.map" IsNative="true" />
+    <PlatformManifestFileEntry Include="libSystem.Native.Browser.extpost.js" IsNative="true" />
+    <PlatformManifestFileEntry Include="libBrowserHost.a" IsNative="true" />
+    <PlatformManifestFileEntry Include="callhelpers.hpp" IsNative="true" />
+    <PlatformManifestFileEntry Include="entrypoints.h" IsNative="true" />
+    <PlatformManifestFileEntry Include="utils.h" IsNative="true" />
     <!-- wasi specific -->
     <PlatformManifestFileEntry Include="main.c" IsNative="true" />
     <PlatformManifestFileEntry Include="driver.h" IsNative="true" />
diff --git a/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj b/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
index f8e03ff1dc0b71..70681477a5869d 100644
--- a/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
+++ b/src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.CoreCLR.sfxproj
@@ -14,6 +14,7 @@
     <VSInsertionShortComponentName>NetCore.SharedFramework</VSInsertionShortComponentName>
     <UseTemplatedPlatformManifest>true</UseTemplatedPlatformManifest>
     <UseRidGraph>true</UseRidGraph>
+    <IncludeStaticLibrariesInPack Condition="'$(TargetsMobile)' == 'true'">true</IncludeStaticLibrariesInPack>
   </PropertyGroup>
 
   <ItemGroup>
diff --git a/src/libraries/sendtohelix-browser.targets b/src/libraries/sendtohelix-browser.targets
index 3af0478473c414..e536101762ed76 100644
--- a/src/libraries/sendtohelix-browser.targets
+++ b/src/libraries/sendtohelix-browser.targets
@@ -174,7 +174,7 @@
     <_XUnitTraitArg Condition="'$(TestUsingWorkloads)' != 'true'">-trait category=no-workload</_XUnitTraitArg>
     <_XUnitTraitArg Condition="'$(WasmFingerprintAssets)' == 'false'">$(_XUnitTraitArg) -trait category=no-fingerprinting</_XUnitTraitArg>
     <_XUnitTraitArg Condition="'$(WasmBundlerFriendlyBootConfig)' == 'true'">$(_XUnitTraitArg) -trait category=bundler-friendly</_XUnitTraitArg>
-    <_XUnitTraitArg Condition="'$(RuntimeFlavor)' == 'CoreCLR'">-notrait category=native -notrait category=mono -notrait category=workload</_XUnitTraitArg>
+    <_XUnitTraitArg Condition="'$(RuntimeFlavor)' == 'CoreCLR'">-notrait category=mono -notrait category=workload</_XUnitTraitArg>
   </PropertyGroup>
 
   <PropertyGroup>
diff --git a/src/mono/browser/build/BrowserWasmApp.CoreCLR.targets b/src/mono/browser/build/BrowserWasmApp.CoreCLR.targets
index ab69d2c3d8465b..2d5011abc891d9 100644
--- a/src/mono/browser/build/BrowserWasmApp.CoreCLR.targets
+++ b/src/mono/browser/build/BrowserWasmApp.CoreCLR.targets
@@ -17,6 +17,11 @@
     <!-- Set IsBrowserWasmProject for browser-wasm targets -->
     <IsBrowserWasmProject Condition="'$(IsBrowserWasmProject)' == '' and ('$(RuntimeIdentifier)' == 'browser-wasm' or '$(RuntimeIdentifiers)' == 'browser-wasm')">true</IsBrowserWasmProject>
 
+    <!-- Default to full globalization (ICU sharding). Mirrors Mono's WasmFeatures.props behavior.
+         Without this, the SDK defaults _WasmInvariantGlobalization=true when InvariantGlobalization is empty,
+         which excludes ICU .dat files from publish output and forces invariant mode. -->
+    <InvariantGlobalization Condition="'$(InvariantGlobalization)' == ''">false</InvariantGlobalization>
+
     <!-- Ensure TargetsBrowser is set so native.wasm.targets populates exported functions/methods -->
     <TargetsBrowser Condition="'$(TargetsBrowser)' == '' and '$(IsBrowserWasmProject)' == 'true'">true</TargetsBrowser>
 
@@ -271,9 +276,15 @@
       <_EmccCFlags Include="-DGEN_PINVOKE=1" />
       <_EmccCFlags Include="$(EmccExtraCFlags)" />
 
-      <!-- Include paths for ManagedToNativeGenerator output compilation -->
-      <_EmccCFlags Include="-I&quot;$(RepoRoot)src/coreclr/vm/wasm&quot;" Condition="Exists('$(RepoRoot)src/coreclr/vm/wasm/callhelpers.hpp')" />
-      <_EmccCFlags Include="-I&quot;$(RepoRoot)src/native&quot;" Condition="Exists('$(RepoRoot)src/native/minipal/entrypoints.h')" />
+      <!-- Include paths for ManagedToNativeGenerator output compilation.
+           Prefer the runtime pack's include directory (works for out-of-tree app builds);
+           fall back to repo source paths for in-tree dev builds before the pack is refreshed.
+           $(RepoRoot) is available in-tree; $(RepositoryEngineeringDir) is set by WBT test infrastructure. -->
+      <_EmccCFlags Include="-I&quot;$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include&quot;" Condition="Exists('$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include/callhelpers.hpp')" />
+      <_EmccCFlags Include="-I&quot;$(RepoRoot)src/coreclr/vm/wasm&quot;" Condition="!Exists('$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include/callhelpers.hpp') and '$(RepoRoot)' != '' and Exists('$(RepoRoot)src/coreclr/vm/wasm/callhelpers.hpp')" />
+      <_EmccCFlags Include="-I&quot;$([MSBuild]::NormalizePath('$(RepositoryEngineeringDir)', '..', 'src', 'coreclr', 'vm', 'wasm'))&quot;" Condition="!Exists('$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include/callhelpers.hpp') and '$(RepoRoot)' == '' and '$(RepositoryEngineeringDir)' != '' and Exists('$([MSBuild]::NormalizePath($(RepositoryEngineeringDir), .., src, coreclr, vm, wasm, callhelpers.hpp))')" />
+      <_EmccCFlags Include="-I&quot;$(RepoRoot)src/native&quot;" Condition="!Exists('$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include/minipal/entrypoints.h') and '$(RepoRoot)' != '' and Exists('$(RepoRoot)src/native/minipal/entrypoints.h')" />
+      <_EmccCFlags Include="-I&quot;$([MSBuild]::NormalizePath('$(RepositoryEngineeringDir)', '..', 'src', 'native'))&quot;" Condition="!Exists('$(MicrosoftNetCoreAppRuntimePackRidNativeDir)include/minipal/entrypoints.h') and '$(RepoRoot)' == '' and '$(RepositoryEngineeringDir)' != '' and Exists('$([MSBuild]::NormalizePath($(RepositoryEngineeringDir), .., src, native, minipal, entrypoints.h))')" />
       <_EmccCFlags Include="-include &quot;$(_WasmIntermediateOutputPath)coreclr_compat.h&quot;" />
     </ItemGroup>
 
@@ -455,10 +466,10 @@
       <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.Native.Browser.a" />
       <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.Runtime.InteropServices.JavaScript.Native.a" />
       <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.Native.a" />
-      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.Globalization.Native.a" Condition="'$(InvariantGlobalization)' != 'true'" />
-      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicuuc.a"                     Condition="'$(InvariantGlobalization)' != 'true'" />
-      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicui18n.a"                   Condition="'$(InvariantGlobalization)' != 'true'" />
-      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicudata.a"                   Condition="'$(InvariantGlobalization)' != 'true'" />
+      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.Globalization.Native.a" />
+      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicuuc.a" />
+      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicui18n.a" />
+      <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libicudata.a" />
       <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libSystem.IO.Compression.Native.a" />
       <_CoreCLRNativeLibs Include="$(MicrosoftNetCoreAppRuntimePackRidNativeDir)libz.a" />
 
diff --git a/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests.cs b/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests.cs
index 2883967abc0105..dab26e1fbba496 100644
--- a/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests.cs
@@ -20,7 +20,7 @@ public IcuShardingTests(ITestOutputHelper output, SharedBuildPerTestClassFixture
         : base(output, buildContext) { }
 
     public static IEnumerable<object[]> IcuExpectedAndMissingCustomShardTestData(Configuration config) =>
-        from aot in boolOptions
+        from aot in aotBoolOptions
             from onlyPredefinedCultures in boolOptions
             // isOnlyPredefinedCultures = true fails with wasmbrowser: https://github.com/dotnet/runtime/issues/108272
             where !(onlyPredefinedCultures)
@@ -34,7 +34,7 @@ public static IEnumerable<object[]> IcuExpectedAndMissingAutomaticShardTestData(
             { "ja-JP", GetCjkTestedLocales(SundayNames.Japanese) },
             { "sk-SK", GetNocjkTestedLocales(SundayNames.Slovak) }
         }; 
-        return from aot in boolOptions
+        return from aot in aotBoolOptions
             from locale in locales
             select new object[] { config, aot, locale.Key, locale.Value };
     }
diff --git a/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests2.cs b/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests2.cs
index 7005b99642b21e..7ed15d1c61928a 100644
--- a/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests2.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/IcuShardingTests2.cs
@@ -31,7 +31,7 @@ public static IEnumerable<object[]> IcuExpectedAndMissingShardFromRuntimePackTes
             { "icudt_no_CJK.dat", GetNocjkTestedLocales() }
         }; 
         return
-            from aot in boolOptions
+            from aot in aotBoolOptions
             from locale in locales
             select new object[] { config, aot, locale.Key, locale.Value };
     }
diff --git a/src/mono/wasm/Wasm.Build.Tests/IcuTests.cs b/src/mono/wasm/Wasm.Build.Tests/IcuTests.cs
index f57e229bc0200d..52f65f271bc378 100644
--- a/src/mono/wasm/Wasm.Build.Tests/IcuTests.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/IcuTests.cs
@@ -20,7 +20,7 @@ public IcuTests(ITestOutputHelper output, SharedBuildPerTestClassFixture buildCo
         : base(output, buildContext) { }
 
     public static IEnumerable<object[]> FullIcuWithICustomIcuTestData(Configuration config) =>
-        from aot in boolOptions
+        from aot in aotBoolOptions
             from fullIcu in boolOptions
             select new object[] { config, aot, fullIcu };
 
@@ -34,7 +34,7 @@ public static IEnumerable<object[]> FullIcuWithInvariantTestData(Configuration c
             new object[] { false, false, GetEfigsTestedLocales() },
             new object[] { false, true,  s_fullIcuTestedLocales }
         }; 
-        return from aot in boolOptions
+        return from aot in aotBoolOptions
             from locale in locales
             select new object[] { config, aot, locale[0], locale[1], locale[2] };
     }
diff --git a/src/mono/wasm/Wasm.Build.Tests/IcuTestsBase.cs b/src/mono/wasm/Wasm.Build.Tests/IcuTestsBase.cs
index daf9b7ea597176..b635a10ea964df 100644
--- a/src/mono/wasm/Wasm.Build.Tests/IcuTestsBase.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/IcuTestsBase.cs
@@ -20,6 +20,8 @@ public IcuTestsBase(ITestOutputHelper output, SharedBuildPerTestClassFixture bui
     private const string _fallbackSundayNameEnUS = "Sunday";
     protected static string[] templateTypes = { "wasmbrowser" };
     protected static bool[] boolOptions =  { false, true };
+    // CoreCLR WASM doesn't support AOT; filter to aot=false only for CoreCLR runs
+    protected static bool[] aotBoolOptions => IsCoreClrRuntime ? new[] { false } : new[] { false, true };
 
     protected record SundayNames
     {
diff --git a/src/mono/wasm/Wasm.Build.Tests/InvariantGlobalizationTests.cs b/src/mono/wasm/Wasm.Build.Tests/InvariantGlobalizationTests.cs
index 9a7950b7a5ec4b..5e64d40d0cb8ff 100644
--- a/src/mono/wasm/Wasm.Build.Tests/InvariantGlobalizationTests.cs
+++ b/src/mono/wasm/Wasm.Build.Tests/InvariantGlobalizationTests.cs
@@ -45,6 +45,9 @@ public async Task RelinkingWithoutAOT(Configuration config, bool aot, bool? inva
 
         private async Task TestInvariantGlobalization(Configuration config, bool aot, bool? invariantGlobalization, bool? isNativeBuild = null)
         {
+            if (aot && IsCoreClrRuntime)
+                return; // CoreCLR WASM doesn't support AOT
+
             string extraProperties = isNativeBuild == true ? "<WasmBuildNative>true</WasmBuildNative>" : "";
             if (invariantGlobalization != null)
             {
diff --git a/src/mono/wasm/Wasm.Build.Tests/Wasm.Build.Tests.csproj b/src/mono/wasm/Wasm.Build.Tests/Wasm.Build.Tests.csproj
index 950f47c9b3ebe0..4bb51af40aeb67 100644
--- a/src/mono/wasm/Wasm.Build.Tests/Wasm.Build.Tests.csproj
+++ b/src/mono/wasm/Wasm.Build.Tests/Wasm.Build.Tests.csproj
@@ -106,7 +106,7 @@
       <_XUnitTraitArg Condition="'$(TestUsingWorkloads)' != 'true'">-trait category=no-workload</_XUnitTraitArg>
       <_XUnitTraitArg Condition="'$(WasmFingerprintAssets)' == 'false'">-trait category=no-fingerprinting</_XUnitTraitArg>
       <_XUnitTraitArg Condition="'$(WasmBundlerFriendlyBootConfig)' == 'true'">-trait category=bundler-friendly</_XUnitTraitArg>
-      <_XUnitTraitArg Condition="'$(RuntimeFlavor)' == 'CoreCLR'">-notrait category=native -notrait category=mono -notrait category=workload</_XUnitTraitArg>
+      <_XUnitTraitArg Condition="'$(RuntimeFlavor)' == 'CoreCLR'">-notrait category=mono -notrait category=workload</_XUnitTraitArg>
     </PropertyGroup>
 
     <PropertyGroup Condition="'$(ContinuousIntegrationBuild)' != 'true'">
diff --git a/src/native/corehost/browserhost/CMakeLists.txt b/src/native/corehost/browserhost/CMakeLists.txt
index 2249627f393f8d..b9bb956436b9da 100644
--- a/src/native/corehost/browserhost/CMakeLists.txt
+++ b/src/native/corehost/browserhost/CMakeLists.txt
@@ -138,5 +138,10 @@ install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dotnet.native.wasm DESTINATION sharedF
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dotnet.native.js.symbols DESTINATION corehost COMPONENT runtime)
 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/dotnet.native.js.symbols DESTINATION sharedFramework COMPONENT runtime)
 
+# Headers needed for app native re-link (ManagedToNativeGenerator output includes these)
+install(FILES ${CLR_REPO_ROOT_DIR}/src/coreclr/vm/wasm/callhelpers.hpp DESTINATION sharedFramework/include COMPONENT runtime)
+install(FILES ${CLR_REPO_ROOT_DIR}/src/native/minipal/entrypoints.h DESTINATION sharedFramework/include/minipal COMPONENT runtime)
+install(FILES ${CLR_REPO_ROOT_DIR}/src/native/minipal/utils.h DESTINATION sharedFramework/include/minipal COMPONENT runtime)
+
 set_source_files_properties(${BROWSERHOST_SOURCES} PROPERTIES OBJECT_DEPENDS
     "${JS_SYSTEM_NATIVE_BROWSER};${JS_SYSTEM_BROWSER_UTILS};${JS_SYSTEM_RUNTIME_INTEROPSERVICES_JAVASCRIPT_NATIVE};${JS_BROWSER_HOST};${JS_SYSTEM_NATIVE_BROWSER_EXPOST}")
diff --git a/src/native/corehost/browserhost/libBrowserHost.footer.js b/src/native/corehost/browserhost/libBrowserHost.footer.js
index f400eb4798b0dd..153f891e1251ad 100644
--- a/src/native/corehost/browserhost/libBrowserHost.footer.js
+++ b/src/native/corehost/browserhost/libBrowserHost.footer.js
@@ -18,8 +18,10 @@ function libBrowserHostFactory() {
     libBrowserHost(exports);
 
     // libBrowserHostFn is too complex for acorn-optimizer.mjs to find the dependencies
+    // NOTE: wasm_load_icu_data is NOT listed here because it's only available when
+    // InvariantGlobalization != true. The loadIcuData() JS code is only called when
+    // ICU data is present, so the symbol doesn't need to be a hard link-time dependency.
     let explicitDeps = [
-        "wasm_load_icu_data",
         "BrowserHost_CreateHostContract",
         "BrowserHost_InitializeDotnet",
         "BrowserHost_ExecuteAssembly",