diff --git a/eng/pipelines/coreclr/runtime-nativeaot-outerloop.yml b/eng/pipelines/coreclr/runtime-nativeaot-outerloop.yml
index de23519f9c62e..e8bfd86cd81dd 100644
--- a/eng/pipelines/coreclr/runtime-nativeaot-outerloop.yml
+++ b/eng/pipelines/coreclr/runtime-nativeaot-outerloop.yml
@@ -57,6 +57,7 @@ extends:
           platforms:
           - windows_x64
           - windows_arm64
+          - windows_x86
           - osx_x64
           - osx_arm64
           - linux_x64
@@ -164,6 +165,7 @@ extends:
           buildConfig: Checked
           platforms:
           - windows_x64
+          - windows_x86
           - linux_x64
           - linux_arm
           variables:
@@ -172,7 +174,7 @@ extends:
           - name: timeoutPerTestCollectionInMinutes
             value: 180
           jobParameters:
-            timeoutInMinutes: 240
+            timeoutInMinutes: 300 # doesn't normally take this long, but we have had Helix queues backed up for over an hour
             nameSuffix: NativeAOT_Pri0
             buildArgs: -s clr.aot+host.native+libs -rc $(_BuildConfig) -lc Release -hc Release /p:RunAnalyzers=false
             postBuildSteps:
diff --git a/src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Publish.targets b/src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Publish.targets
index f57c573057cec..d8783480def1f 100644
--- a/src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Publish.targets
+++ b/src/coreclr/nativeaot/BuildIntegration/Microsoft.NETCore.Native.Publish.targets
@@ -64,11 +64,11 @@
     <Error Condition="'$(DisableUnsupportedError)' != 'true' and '$(OS)' != 'Windows_NT' and '$(_targetOS)' == 'win'"
       Text="Cross-OS native compilation is not supported." />
 
-    <Error Condition="'$(DisableUnsupportedError)' != 'true' and '$(_targetArchitecture)' != 'x64' and '$(_targetArchitecture)' != 'arm64' and '$(_targetArchitecture)' != 'arm'"
+    <Error Condition="'$(DisableUnsupportedError)' != 'true' and '$(_targetArchitecture)' != 'x64' and '$(_targetArchitecture)' != 'x86' and '$(_targetArchitecture)' != 'arm64' and '$(_targetArchitecture)' != 'arm'"
       Text="Native compilation does not support targeting $(RuntimeIdentifier) yet." />
 
-    <Error Condition="'$(DisableUnsupportedError)' != 'true' and !('$(_hostArchitecture)' == 'x64' or '$(_hostArchitecture)' == 'arm64' or '$(_hostArchitecture)' == 'arm')"
-      Text="Native compilation can run on x64, arm64 and arm hosts only." />
+    <Error Condition="'$(DisableUnsupportedError)' != 'true' and '$(_hostArchitecture)' != 'x64' and '$(_hostArchitecture)' != 'x86' and '$(_hostArchitecture)' != 'arm64' and '$(_hostArchitecture)' != 'arm'"
+      Text="Native compilation can run on x64, x86, arm64 and arm hosts only." />
 
     <Error Condition="'$(IlcHostPackagePath)' == '' and '$(RuntimePackagePath)' != '' and ('$(_hostArchitecture)' == 'x64' or '$(_hostArchitecture)' == 'arm64')"
       Text="Add a PackageReference for '$(_hostPackageName)' to allow cross-compilation for $(_targetArchitecture)" />
diff --git a/src/installer/pkg/projects/Microsoft.DotNet.ILCompiler/ILCompilerRIDs.props b/src/installer/pkg/projects/Microsoft.DotNet.ILCompiler/ILCompilerRIDs.props
index 7c32807ea03ff..f1f6193300baf 100644
--- a/src/installer/pkg/projects/Microsoft.DotNet.ILCompiler/ILCompilerRIDs.props
+++ b/src/installer/pkg/projects/Microsoft.DotNet.ILCompiler/ILCompilerRIDs.props
@@ -12,6 +12,7 @@
     <OfficialBuildRID Include="osx-arm64" Platform="arm64" />
     <OfficialBuildRID Include="win-arm64" Platform="arm64" />
     <OfficialBuildRID Include="win-x64" Platform="x64" />
+    <OfficialBuildRID Include="win-x86" Platform="x86" />
     <OfficialBuildRID Include="freebsd-x64" Platform="x64" />
     <OfficialBuildRID Include="freebsd-arm64" Platform="arm64" />
     <OfficialBuildRID Include="$(OutputRID)" Platform="$(TargetArchitecture)" Exclude="@(OfficialBuildRID)" />