Run .NET Multi-platform App UI development problem run under Windows 10

[vukmileusnic]

For testing .NET Multi-platform App UI development projects I use VMware Workstation Pro and Oracle VM VirtualBox to run Visual Studio 2022. On Windows 11 I can projects, but on Windows 10 project star and close quickly. I don't see a errors? The same problem exists with new .NET MAUI projects.

Anyone had a similar problem?

Please see video: https://github.com/dotnet/maui/assets/170092520/0240c94b-f3e2-4570-a83f-998f8317c019

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[moljac]

Hi

@vukmileusnic Thanks for the feedback.

There is visible warning:

MSB3277: Found conflicts between different versions of 'assembly' that could not be resolved

This would indicate that installation is messed up.

Try creating MSBuild structured log with diagnostic output please

dotnet build <SLN|CSPROJ> -bl -v:diagnostic

(BTW logs and text is tons better than video. I had to retype errors and warnings)

Details in the link:

https://learn.microsoft.com/en-us/visualstudio/msbuild/errors/msb3277?view=vs-2022

And last error:

has exited with code 2147942405 (0x80070005)

Indicates issue with WinApp SDK

Possible workarounds:

1. start app once as Admin
2. manually install the Microsoft.WindowsAppRuntime.1.2 redist

Details:

• https://github.com/dotnet/maui/issues/12080

• https://www.reddit.com/r/csharp/comments/10fvh4g/visual_studio_update_broke_maui_app/

• https://github.com/dotnet/maui/issues/12581

• https://stackoverflow.com/questions/75064353/net-7-blazor-maui-windows-machine-will-not-run

and yes - please report if something worked.

[vukmileusnic]

@moljac Thank you for your reply.

I tried to solve the problem:

1) Start project as admin 2) Manually install the Microsoft.WindowsAppRuntime.1.2 redist 3) Reinstall .NET 8

In the end, the only solution was:

1) Create new Windows 10 64-bit in VMware Workstation Pro

2) Download ISO file Windows 10 from here https://www.microsoft.com/sr-latn-rs/software-download/windows10

3) Install Windows 10 64-bit Pro N

4) Download Visual Studio 2022 (Install .NET Multi-platform App UI and Node.js development)

4.1) Restart virtual PC

5) Install .NET 8 Hosting Bundle: https://dotnet.microsoft.com/en-us/download/dotnet/thank-you/runtime-aspnetcore-8.0.5-windows-hosting-bundle-installer

5.1) Restart virtual PC

6) Project .NET Multi-platform App UI started under Windows 10 64-bit in VMware Workstation Pro

[dotnet-policy-service[bot]]

Hi @vukmileusnic. We have added the "s/try-latest-version" label to this issue, which indicates that we'd like you to try and reproduce this issue on the latest available public version. This can happen because we think that this issue was fixed in a version that has just been released, or the information provided by you indicates that you might be working with an older version.

You can install the latest version by installing the latest Visual Studio (Preview) with the .NET MAUI workload installed. If the issue still persists, please let us know with any additional details and ideally a reproduction project provided through a GitHub repository.

This issue will be closed automatically in 7 days if we do not hear back from you by then - please feel free to re-open it if you come back to this issue after that time.