[Nuget] Weird working directory state when updating to xenko 3.0

when i try to update xenko 3.0 on the launcher there is an error :

An error occurred while uninstalling version 3.0.0.6. Access to the path 'C:\WINDOWS\system32\nuget.lock' is denied. 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 Xenko.Core.Windows.FileLock.Wait(String name, Int32 millisecondsTimeout) at Xenko.Core.Packages.NugetStore.d51.MoveNext() --- End of stack trace from previous location where exception was thrown --- at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw() at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) at Xenko.LauncherApp.ViewModels.PackageVersionViewModel.<>cDisplayClass55_0.<b0>d.MoveNext()

Start by reading Xenko.Core.Windows.FileLock.Wait and Xenko.Core.Packages.NugetStore.UninstallPackage, then reproduce the launcher update from the reported error. Done means updating to Xenko 3.0 no longer fails with access denied for C:\WINDOWS\system32\nuget.lock.