Reports

  * You intended to run a global tool, but a dotnet-prefixed executable with this name could not be found on the PATH.
PM> dotnet tool install --global dotnet-ef
dotnet : Unhandled exception: System.Net.Http.HttpRequestException: Response status code does not indicate success: 401 (Unauthorized).
At line:1 char:1
+ dotnet tool install --global dotnet-ef
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (Unhandled excep...(Unauthorized).:String) [], RemoteException
    + FullyQualifiedErrorId : NativeCommandError
 
   at System.Net.Http.HttpResponseMessage.EnsureSuccessStatusCode()
   at NuGet.Protocol.HttpSource.<>c__DisplayClass15_0`1.<<GetAsync>b__0>d.MoveNext()
--- End of stack trace from previous location ---
   at NuGet.Common.ConcurrencyUtilities.ExecuteWithFileLockedAsync[T](String filePath, Func`2 action, CancellationToken token)
   at NuGet.Common.ConcurrencyUtilities.ExecuteWithFileLockedAsync[T](String filePath, Func`2 action, CancellationToken token)
   at NuGet.Protocol.HttpSource.GetAsync[T](HttpSourceCachedRequest request, Func`2 processAsync, ILogger log, CancellationToken token)
   at NuGet.Protocol.PackageMetadataResourceV3.LoadRegistrationIndexAsync(HttpSource httpSource, Uri registrationUri, String packageId, SourceCacheContext cacheContext, Func`2 processAsync, ILogger log, 
CancellationToken token)
   at NuGet.Protocol.PackageMetadataResourceV3.GetMetadataAsync(String packageId, Boolean includePrerelease, Boolean includeUnlisted, VersionRange range, SourceCacheContext sourceCacheContext, ILogger log, 
CancellationToken token)
   at NuGet.Protocol.PackageMetadataResourceV3.GetMetadataAsync(String packageId, Boolean includePrerelease, Boolean includeUnlisted, SourceCacheContext sourceCacheContext, ILogger log, CancellationToken token)
   at Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageDownloader.GetPackageMetadataAsync(PackageSource source, String packageIdentifier, Boolean includePrerelease, Boolean includeUnlisted, CancellationToken 
cancellationToken)
   at Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageDownloader.GetMatchingVersionInternalAsync(String packageIdentifier, IEnumerable`1 packageSources, VersionRange versionRange, CancellationToken 
cancellationToken)
   at Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageDownloader.GetBestPackageVersionAsync(PackageId packageId, VersionRange versionRange, PackageSourceLocation packageSourceLocation)
   at Microsoft.DotNet.Cli.ToolPackage.ToolPackageDownloader.<>c__DisplayClass8_0.<InstallPackage>b__0()
   at Microsoft.DotNet.Cli.TransactionalAction.Run[T](Func`1 action, Action commit, Action rollback)
   at Microsoft.DotNet.Tools.Tool.Install.ToolInstallGlobalOrToolPathCommand.<>c__DisplayClass20_0.<Execute>b__1()
   at Microsoft.DotNet.Tools.Tool.Install.ToolInstallGlobalOrToolPathCommand.RunWithHandlingInstallError(Action installAction)
   at Microsoft.DotNet.Tools.Tool.Install.ToolInstallGlobalOrToolPathCommand.Execute()
   at System.CommandLine.Invocation.InvocationPipeline.Invoke(ParseResult parseResult)
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient)
PM>
How to solve this issue
79547944
