Forum Xamarin Xamarin.Forms

Issue on Xamarin Essentials nuget package.

Hi I want to use Xamarin Essentials nuget package but after installation when I build my app give some error.
Severity Code Description Project File Line Suppression State
Error The "FilterAssemblies" task failed unexpectedly.
System.IO.FileNotFoundException: Could not find file 'C:\Work\myApp\myApp\myApp\bin\Debug\netstandard2.0\myApp.dll'.
File name: 'C:\Work\myApp\myApp\myApp\bin\Debug\netstandard2.0\myApp.dll'
at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share)
at Xamarin.Android.Tasks.FilterAssemblies.Execute()
at Microsoft.Build.BackEnd.TaskExecutionHost.Microsoft.Build.BackEnd.ITaskExecutionHost.Execute()
at Microsoft.Build.BackEnd.TaskBuilder.d__26.MoveNext() myApp.Android


  • AlessandroCaliaroAlessandroCaliaro ITMember ✭✭✭✭✭

    you can try to delete all obj and bin directories

  • JarvanJarvan Member, Xamarin Team Xamurai

    Someone has faced the issue, updating Forms solved the problem. Try to update the version of Xamarin.Forms to 4.2.

  • batmacibatmaci DEMember ✭✭✭✭✭
    You are reading it wrong. He says that it happened with 4.2 and this error is related to latest vs 2019 windows update and latest version. It even occurs for a default project template when you build using aot in release. It has nothing to do with any nuget package. I can build it fine on vs mac 2019
  • shivendrama10shivendrama10 Member ✭✭

    My Project running but when install Xamarin Essentials nuget package then gives error Other wise working fine.
    I want to check internet Connectivity when my app start so I want to use Xamarin Essentials. and after installation it gives error.

  • JarvanJarvan Member, Xamarin Team Xamurai

    Have you installed Xamarin.Essentails package in both Forms and platform projects?

  • shivendrama10shivendrama10 Member ✭✭

    Yes I Have install using nuget package and install myApp,myApp.Android and myApp.iOS

  • JarvanJarvan Member, Xamarin Team Xamurai

    Would you mind sharing a basic demo to reproduce the issue? It'll help to get a solution.

  • suraj007suraj007 Member ✭✭✭

    Change your project file path c folder to another and delete all obj and bin directories.

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