[Bug] MSAL.Net RuntimeBroker doesn't support NativeAOT on windows.

[azchohfi]

Library version used

4.57.0

.NET version

8.0

Scenario

PublicClient - desktop app

Is this a new or an existing app?

None

Issue description and reproduction steps

Calling await _app.GetAccountsAsync() with nativeaot turned on throws an exception.

Relevant code snippets

Unhandled exception: MSAL.NetCore.4.57.0.0.MsalClientException:
        ErrorCode: wam_runtime_init_failed
Microsoft.Identity.Client.MsalClientException: A type initializer threw an exception.
 ---> System.NotSupportedException: CodeBase is not supported on assemblies loaded from a single-file bundle.
   at System.Reflection.Runtime.Assemblies.RuntimeAssemblyInfo.get_CodeBase()
   at Microsoft.Identity.Client.NativeInterop.Platform.GetExecutingAssemblyDirectory()
   at Microsoft.Identity.Client.NativeInterop.API.GetPackagePathAndSetEnvironmentVariables()
   at Microsoft.Identity.Client.NativeInterop.API..cctor()
   at Microsoft.Identity.Client.NativeInterop.Module.AddRef(String)
   at Microsoft.Identity.Client.NativeInterop.Core..ctor()
   at Microsoft.Identity.Client.Platforms.Features.RuntimeBroker.RuntimeBroker.<>c.<.cctor>b__24_0()
   at Microsoft.Identity.Client.Platforms.Features.RuntimeBroker.RuntimeBroker.<>c.<.cctor>b__24_0()
   at System.Lazy`1.ViaFactory(LazyThreadSafetyMode)
   at System.Lazy`1.ExecutionAndPublication(LazyHelper, Boolean)
   at System.Lazy`1.CreateValue()
   at Microsoft.Identity.Client.Platforms.Features.RuntimeBroker.RuntimeBroker.IsBrokerInstalledAndInvokable(AuthorityType)
   at Microsoft.Identity.Client.ClientApplicationBase.<GetAccountsFromBrokerAsync>d__21.MoveNext()
   at Microsoft.Identity.Client.ClientApplicationBase.<GetAccountsInternalAsync>d__20.MoveNext()
   at Microsoft.Identity.Client.ClientApplicationBase.<GetAccountsAsync>d__13.MoveNext()
   at Microsoft.Identity.Client.ClientApplicationBase.<GetAccountsAsync>d__12.MoveNext()

Expected behavior

Works with NativeAOT.

Identity provider

Microsoft Entra ID (Work and School accounts and Personal Microsoft accounts)

Regression

No response

Solution and workarounds

No response

[azchohfi]

Related issue: https://github.com/AzureAD/microsoft-authentication-library-for-dotnet/issues/4424

[bgavrilMS]

This bug will have been fixed in the broker interop https://github.com/AzureAD/microsoft-authentication-library-for-cpp/pull/3807/files (private repo) but not yet released.

@ashok672, @iulico-1 - regular release goes out every Thu of every month, so next one is scheduled on Dec 7. Happy to help with an out of band release if needed by partners.

[pmaytak]

Released in 4.58.0.

[azchohfi]

I'm still having issues even with 4.58.0:

Unhandled exception: System.IO.FileNotFoundException: Could not find file 'System.Windows.Forms'.
File name: 'System.Windows.Forms'
   at Internal.Runtime.TypeLoaderExceptionHelper.CreateFileNotFoundException(ExceptionStringID, String) + 0x43
   at Internal.Runtime.CompilerHelpers.ThrowHelpers.ThrowFileNotFoundException(ExceptionStringID, String) + 0x9

Maybe it is related to this? https://github.com/dotnet/winforms/issues/4649

[azchohfi]

I did have an ILC warning during my compilation, mentioning exactly that method: 2>ILC: Method '[msstore]MSStore.CLI.Services.TokenManager.MSALTokenManager+<InitAppAsync>d__16.MoveNext()' will always throw because: Failed to load assembly 'System.Windows.Forms'

[azchohfi]

Oh, actually that was a misconfiguration in my compilation. I had SelfContained=false. It had to be true.