Windows/UWP crashes on 8.0.10

[negberts]

Description

After updating our app to MAUI 8.0.10 the UWP app crashes/won't start. It doesn't even get to the splash screen. 8.0.7 works fine. 8.0.14 is also not working. Some error logging is in the event viewer:

Faulting application name: Pim.MobileApp.Maui.exe, version: 2.0.0.0, time stamp: 0x65cd0000
Faulting module name: KERNELBASE.dll, version: 10.0.19041.3996, time stamp: 0xb756c9ff
Exception code: 0xc000027b
Fault offset: 0x000000000012d952
Faulting process id: 0x5dbc
Faulting application start time: 0x01da7b97156892b4
Faulting application path: C:\Program Files\WindowsApps\F953A006.PIMinfraapp_1.0.362.0_x64__rjxgsa4r47vyj\Pim.MobileApp.Maui.exe
Faulting module path: C:\windows\System32\KERNELBASE.dll
Report Id: c037bac8-345e-4c08-bacc-089554d534c6
Faulting package full name: F953A006.PIMinfraapp_1.0.362.0_x64__rjxgsa4r47vyj
Faulting package-relative application ID: App

Steps to Reproduce

Update a MAUI app to 8.0.10, create an msix for it, for example via Azure Devops, and manually install it. Try to start it.

Link to public reproduction project repository

No response

Version with bug

8.0.10 SR3

Is this a regression from previous behavior?

Yes, this used to work in .NET MAUI

Last version that worked well

8.0.7 SR2

Affected platforms

Windows

Affected platform versions

Windows SDK 10.0.19041.3996

Did you find any workaround?

Reverting back to 8.0.7 :-)

Relevant log output

No response

[PureWeen]

@negberts I tested publishing an MSIX on Windows 10 using 8.0.14 and I was able to launch it without any issues.

[negberts]

@PureWeen it's the maps error that is being thrown now...

#19046

When I remove the line .UseMauiCommunityToolkitMaps("API_KEY") then the app no longer crashes...

I've already changed the UseMauiMaps call to

#if IOS || ANDROID
builder.UseMauiMaps();
#endif

So apparantly UseMauiCommunityToolkitMaps calls UseMauiMaps as well?

[jfversluis]

So apparently UseMauiCommunityToolkitMaps calls UseMauiMaps as well?

Yes, that is a dependency, glad you were able to figure it out!

[negberts]

@jfversluis but how can I use UseMauiCommunityToolkitMaps now then? Is a map on UWP simply not possible anymore?

[jfversluis]

Ah I see what you're saying, yeah I guess we didn't consider this scenario.

Because now even when you would do

  var builder = MauiApp.CreateBuilder();
  builder
	  .UseMauiApp<App>()
	  .ConfigureFonts(fonts =>
	  {
		  fonts.AddFont("OpenSans-Regular.ttf", "OpenSansRegular");
		  fonts.AddFont("OpenSans-Semibold.ttf", "OpenSansSemibold");
	  });

    #if IOS || ANDROID
    builder.UseMauiMaps();
    #endif
    
    #if WINDOWS
    // Initialize the .NET MAUI Community Toolkit Maps by adding the below line of code
    builder.UseMauiCommunityToolkitMaps("key")
    #endif

   return builder.Build();

It would still call UseMauiMaps() from the UseMauiCommunityToolkitMaps() and then throw the exception.

[negberts]

@jfversluis That is exactly what we are doing :-)

[jfversluis]

@negberts would you maybe be able to reach out on the email address on my GitHub profile and test something out with me?

The obvious thing here is to revert the PR, but I think maybe we can fix it on the Toolkit side and get a fix out more quickly.

[jfversluis]

Completed on the .NET MAUI Community Toolkit side. Please update the Toolkit Maps package to 2.0.1 if you're experiencing this crash, thanks!