diff --git a/global.json b/global.json
index 0a8c8786bd9a2..1d941dfd8c893 100644
--- a/global.json
+++ b/global.json
@@ -1,11 +1,11 @@
 {
   "sdk": {
-    "version": "9.0.100-preview.3.24204.13",
+    "version": "9.0.100-preview.4.24267.66",
     "allowPrerelease": true,
     "rollForward": "major"
   },
   "tools": {
-    "dotnet": "9.0.100-preview.3.24204.13"
+    "dotnet": "9.0.100-preview.4.24267.66"
   },
   "msbuild-sdks": {
     "Microsoft.DotNet.Arcade.Sdk": "9.0.0-beta.24272.5",
diff --git a/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj b/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj
index d287e10e97d5f..92d6b7e836c47 100644
--- a/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj
+++ b/src/coreclr/tools/aot/ILCompiler.TypeSystem/ILCompiler.TypeSystem.csproj
@@ -29,7 +29,8 @@
   </ItemGroup>
 
   <ItemGroup>
-    <PackageReference Condition="'$(EnableDiaSymReaderUse)' == 'true'" Include="Microsoft.DiaSymReader" Version="$(MicrosoftDiaSymReaderVersion)" />
+    <PackageReference Include="Microsoft.DiaSymReader" Version="$(MicrosoftDiaSymReaderVersion)" Condition="'$(EnableDiaSymReaderUse)' == 'true'" />
+    <PackageReference Include="System.Reflection.Metadata" Version="$(SystemReflectionMetadataVersion)" />
   </ItemGroup>
 
   <ItemGroup>
@@ -714,10 +715,6 @@
     <AdditionalFiles Include="BannedSymbols.txt" />
   </ItemGroup>
 
-  <ItemGroup>
-    <PackageReference Include="System.Reflection.Metadata" Version="$(SystemReflectionMetadataVersion)" />
-  </ItemGroup>
-
   <ItemGroup>
     <PackageReference Include="Microsoft.CodeAnalysis.BannedApiAnalyzers" Version="$(MicrosoftCodeAnalysisBannedApiAnalyzersVersion)" Condition="'$(DotNetBuildSourceOnly)' != 'true'">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
diff --git a/src/coreclr/tools/aot/ILCompiler/ILCompiler.csproj b/src/coreclr/tools/aot/ILCompiler/ILCompiler.csproj
index 5b316f9dad594..823dab33c645c 100644
--- a/src/coreclr/tools/aot/ILCompiler/ILCompiler.csproj
+++ b/src/coreclr/tools/aot/ILCompiler/ILCompiler.csproj
@@ -21,18 +21,11 @@
     <PublishSingleFile Condition="'$(NativeAotSupported)' != 'true'">true</PublishSingleFile>
     <PublishTrimmed Condition="'$(NativeAotSupported)' != 'true'">true</PublishTrimmed>
     <SuppressGenerateILCompilerExplicitPackageReferenceWarning>true</SuppressGenerateILCompilerExplicitPackageReferenceWarning>
-    <!-- Can be removed (along with RuntimeHostConfigurationOption below)
-         once we build with a more recent SDK that has https://github.com/dotnet/sdk/pull/40106. -->
-    <_ComObjectDescriptorSupport>false</_ComObjectDescriptorSupport>
   </PropertyGroup>
 
   <ItemGroup Condition="'$(NativeAotSupported)' == 'true'">
     <PackageReference Include="Microsoft.DotNet.ILCompiler" Version="$(MicrosoftDotNetILCompilerVersion)" />
     <PackageReference Include="runtime.$(ToolsRID).Microsoft.DotNet.ILCompiler" Version="$(MicrosoftDotNetILCompilerVersion)" />
-    <RuntimeHostConfigurationOption Include="System.ComponentModel.TypeDescriptor.IsComObjectDescriptorSupported"
-                                    Condition="'$(_ComObjectDescriptorSupport)' != ''"
-                                    Value="$(_ComObjectDescriptorSupport)"
-                                    Trim="true" />
   </ItemGroup>
 
   <!-- Needed for the amd64 -> amd64 musl cross-build to pass the target flag. -->
diff --git a/src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj b/src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj
index 12c95db67944e..657ac23590a03 100644
--- a/src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj
+++ b/src/coreclr/tools/aot/crossgen2/crossgen2_publish.csproj
@@ -4,17 +4,6 @@
     <_IsPublishing>true</_IsPublishing>
   </PropertyGroup>
 
-  <PropertyGroup>
-    <_ComObjectDescriptorSupport>false</_ComObjectDescriptorSupport>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <RuntimeHostConfigurationOption Include="System.ComponentModel.TypeDescriptor.IsComObjectDescriptorSupported"
-                                    Condition="'$(_ComObjectDescriptorSupport)' != ''"
-                                    Value="$(_ComObjectDescriptorSupport)"
-                                    Trim="true" />
-  </ItemGroup>  
-
   <Import Project="Sdk.props" Sdk="Microsoft.NET.Sdk" />
 
   <PropertyGroup>
diff --git a/src/mono/sample/wasm/blazor-frame/blazor.csproj b/src/mono/sample/wasm/blazor-frame/blazor.csproj
index 362f1bc30cb43..35c9e7f36ceeb 100644
--- a/src/mono/sample/wasm/blazor-frame/blazor.csproj
+++ b/src/mono/sample/wasm/blazor-frame/blazor.csproj
@@ -11,8 +11,8 @@
 
   <ItemGroup>
     <!-- TODO un-pin this when it's possible -->
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0-preview.3.24172.13" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0-preview.3.24172.13" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0-preview.4.24267.6" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0-preview.4.24267.6" PrivateAssets="all" />
   </ItemGroup>
 
 </Project>
diff --git a/src/mono/wasm/testassets/WasmOnAspNetCore/AspNetCoreServer/AspNetCoreServer.csproj b/src/mono/wasm/testassets/WasmOnAspNetCore/AspNetCoreServer/AspNetCoreServer.csproj
index 9b556e8a965da..a9b16c0d71564 100644
--- a/src/mono/wasm/testassets/WasmOnAspNetCore/AspNetCoreServer/AspNetCoreServer.csproj
+++ b/src/mono/wasm/testassets/WasmOnAspNetCore/AspNetCoreServer/AspNetCoreServer.csproj
@@ -10,7 +10,7 @@
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="9.0.0-preview.3.24172.13" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.Server" Version="9.0.0-preview.4.24267.6" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/mono/wasm/testassets/WasmOnAspNetCore/BlazorClient/BlazorClient.csproj b/src/mono/wasm/testassets/WasmOnAspNetCore/BlazorClient/BlazorClient.csproj
index 5c974a459386c..392c7992dafca 100644
--- a/src/mono/wasm/testassets/WasmOnAspNetCore/BlazorClient/BlazorClient.csproj
+++ b/src/mono/wasm/testassets/WasmOnAspNetCore/BlazorClient/BlazorClient.csproj
@@ -12,8 +12,8 @@
 
   <!-- versions are pinned but when run from WBT level, it's taking in-tree runtime -->
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0-preview.1.24081.5" />
-    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0-preview.1.24081.5" PrivateAssets="all" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly" Version="9.0.0-preview.4.24267.6" />
+    <PackageReference Include="Microsoft.AspNetCore.Components.WebAssembly.DevServer" Version="9.0.0-preview.4.24267.6" PrivateAssets="all" />
   </ItemGroup>
 
   <ItemGroup>
diff --git a/src/mono/wasm/testassets/WasmOnAspNetCore/Shared/Shared.csproj b/src/mono/wasm/testassets/WasmOnAspNetCore/Shared/Shared.csproj
index 5980a8781983a..3ddc72d16324b 100644
--- a/src/mono/wasm/testassets/WasmOnAspNetCore/Shared/Shared.csproj
+++ b/src/mono/wasm/testassets/WasmOnAspNetCore/Shared/Shared.csproj
@@ -11,9 +11,6 @@
   <!-- versions are pinned but when run from WBT level, it's taking in-tree runtime -->
   <ItemGroup>
     <PackageReference Include="System.Net.Http.Json" Version="8.0.0" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="9.0.0-preview.1.24081.5" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.Client" Version="9.0.0-preview.4.24267.6" />
   </ItemGroup>
 </Project>
-
-
-