MAUI - Access to the path .dll is denied

[vsfeedback]

This issue has been moved from a ticket on Developer Community.

---

I created new Maui project and I cannot work due to error.
After start debugging, stop, and try to run again.

System.UnauthorizedAccessException: Access to the path 'C:\Users\xxx\source\repos\MauiSygic\obj\Debug\net9.0-android\android\assets\arm64-v8a\Mauixxx.dll' is denied.
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at System.IO.File.InternalDelete(String path, Boolean checkHost)
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at Microsoft.Android.Build.Tasks.Files.CopyIfChanged(String source, String destination) in /Users/runner/work/1/s/xamarin-android/external/xamarin-android-tools/src/Microsoft.Android.Build.BaseTasks/Files.cs:line 125
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at Xamarin.Android.Tasks.MonoAndroidHelper.CopyAssemblyAndSymbols(String source, String destination) in /Users/runner/work/1/s/xamarin-android/src/Xamarin.Android.Build.Tasks/Utilities/MonoAndroidHelper.cs:line 344
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at Xamarin.Android.Tasks.LinkAssembliesNoShrink.CopyIfChanged(ITaskItem source, ITaskItem destination) in /Users/runner/work/1/s/xamarin-android/src/Xamarin.Android.Build.Tasks/Tasks/LinkAssembliesNoShrink.cs:line 161
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at Xamarin.Android.Tasks.LinkAssembliesNoShrink.RunTask() in /Users/runner/work/1/s/xamarin-android/src/Xamarin.Android.Build.Tasks/Tasks/LinkAssembliesNoShrink.cs:line 76
1>C:\Program Files\dotnet\packs\Microsoft.Android.Sdk.Windows\35.0.0-rc.1.80\tools\Xamarin.Android.Common.targets(1415,3): error XALNS7019:    at Microsoft.Android.Build.Tasks.AndroidTask.Execute() in /Users/runner/work/1/s/xamarin-android/external/xamarin-android-tools/src/Microsoft.Android.Build.BaseTasks/AndroidTask.cs:line 25

I using in project global.json:

{
  "sdk": {
    "version": "9.0.100-rc.1.24452.12",
    "rollForward": "latestPatch"
  }
}

---

Original Comments

Feedback Bot on 10/4/2024, 01:14 AM:

We have directed your feedback to the appropriate engineering team for further evaluation. The team will review the feedback and notify you about the next steps.

Samantha Houts [MSFT] on 10/14/2024, 00:46 PM:

Sometimes we see this when the path is too long. If you move your project to a shorter path, does it build? Does this happen with every project or just this one? Does it happen every build? Thanks!

Why do we ask for more info?
We try to reproduce all issues reported with the information provided in the description and comments. When we can’t reproduce the issue, we ask you for more information so we can resolve the issue as quickly and efficiently as possible.
In our guidelines, you can get tips on how to provide clear and simple reproducible steps.

Kopernik Mikolaj on 10/18/2024, 00:44 AM:

(private comment, text removed)

[samhouts]

@dellis1972 maybe another thing to be resolved by #9423?

[dellis1972]

Possibly yes :D

[dellis1972]

More likely resolved by dotnet/android-tools#245 and #9423

[jonpryor]

Please try again with .NET 9 GA. The various fixes to try to improve this scenario (be53aed, others) are only in .NET 9 GA.