[release/7.0] Fix System.Management wminet_utils.dll lookup code for arm64

src/libraries/Microsoft.Windows.Compatibility/src/Microsoft.Windows.Compatibility.csproj

@@ -5,6 +5,8 @@
     <!-- Reference the outputs for the dependency nodes calculation. -->
     <NoTargetsDoNotReferenceOutputAssemblies>false</NoTargetsDoNotReferenceOutputAssemblies>
     <IsPackable>true</IsPackable>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <ServicingVersion>1</ServicingVersion>
     <!-- This is a meta package and doesn't contain any libs. -->
     <NoWarn>$(NoWarn);NU5128</NoWarn>
     <PackageDescription>This Windows Compatibility Pack provides access to APIs that were previously available only for .NET Framework. It can be used from both .NET as well as .NET Standard.</PackageDescription>

src/libraries/System.Management/src/System.Management.csproj

@@ -9,6 +9,8 @@
     <Nullable>annotations</Nullable>
     <IncludeDllSafeSearchPathAttribute>true</IncludeDllSafeSearchPathAttribute>
     <IsPackable>true</IsPackable>
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <ServicingVersion>1</ServicingVersion>
     <AddNETFrameworkPlaceholderFileToPackage>true</AddNETFrameworkPlaceholderFileToPackage>
     <AddNETFrameworkAssemblyReferenceToPackage>true</AddNETFrameworkAssemblyReferenceToPackage>
     <PackageDescription>Provides access to a rich set of management information and management events about the system, devices, and applications instrumented to the Windows Management Instrumentation (WMI) infrastructure.

src/libraries/System.Management/src/System/Management/ManagementScope.cs

@@ -290,7 +290,9 @@ internal enum APTTYPE
         static WmiNetUtilsHelper()
         {
             RegistryKey netFrameworkSubKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\.NETFramework\");
-            string netFrameworkInstallRoot = (string)netFrameworkSubKey?.GetValue("InstallRoot");
+            string netFrameworkInstallRoot = (string)netFrameworkSubKey?.GetValue(RuntimeInformation.ProcessArchitecture == Architecture.Arm64 ?
+                "InstallRootArm64" :
+                "InstallRoot");
 
             if (netFrameworkInstallRoot == null)
             {

src/libraries/System.Management/tests/WmiTestHelper.cs

@@ -11,7 +11,7 @@ public static class WmiTestHelper
         private static readonly bool s_isElevated = AdminHelpers.IsProcessElevated();
         private static readonly bool s_isWmiSupported =
                                             PlatformDetection.IsWindows &&
-                                            PlatformDetection.IsNotArmNorArm64Process &&
+                                            PlatformDetection.IsNotArmProcess &&
                                             PlatformDetection.IsNotWindowsNanoServer &&
                                             PlatformDetection.IsNotWindowsIoTCore &&
                                             !PlatformDetection.IsInAppContainer;