C#•6mo ago

Can't install tools with `dotnet tool` command

When I try to install a dotnet tool from the terminal I always get an error. Example: dotnet tool install docfx -g Running this always gives me an exception with the following stacktrace:

Unhandled exception: Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageInstallerException: Package Source Mapping is enabled, but no source found under the specified package ID: docfx. See the documentation for Package Source Mapping at https://aka.ms/nuget-package-source-mapping for more details.
   at Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageDownloader.LoadNuGetSources(PackageId packageId, PackageSourceLocation packageSourceLocation, PackageSourceMapping packageSourceMapping)
   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.Execute()
   at System.CommandLine.Invocation.InvocationPipeline.Invoke(ParseResult parseResult)
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient)

Unhandled exception: Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageInstallerException: Package Source Mapping is enabled, but no source found under the specified package ID: docfx. See the documentation for Package Source Mapping at https://aka.ms/nuget-package-source-mapping for more details.
   at Microsoft.DotNet.Cli.NuGetPackageDownloader.NuGetPackageDownloader.LoadNuGetSources(PackageId packageId, PackageSourceLocation packageSourceLocation, PackageSourceMapping packageSourceMapping)
   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.Execute()
   at System.CommandLine.Invocation.InvocationPipeline.Invoke(ParseResult parseResult)
   at Microsoft.DotNet.Cli.Program.ProcessArgs(String[] args, TimeSpan startupTime, ITelemetry telemetryClient)

This happens with all packages I try to install. It's telling me something about source mappings, but I don't understand if I have it configured incorrectly, or if I straight up need to disable it or something? Very lost.

8 Replies

Fexty•6mo ago

Yes

phaseshift•6mo ago

have you been through https://aka.ms/nuget-package-source-mapping?

Package Source Mapping

Describes package source mapping functionality and how to onboard

Fexty•6mo ago

I have read through it but I only understand a fraction of what is being said I changed the source mapping in VS for * to nuget.org but if I'm being honest I don't even know what that's supposed to do I have seen one person report this problem and their "fix" was reinstalling windows

Mayor McCheese•6mo ago

Just out of curiosity open a cli tool and make a new directory, go into that directory and type "dotnet new nugetconfig"

Fexty•6mo ago

The command ran and created this config

nuget.config

Fexty•6mo ago

Disable what? Source mapping?

Fexty•6mo ago

I don't understand. When I look at the package using the VS nuget package manager it even says "Package source mapping found"

Fexty•6mo ago

But I can't install it from there because it's a tool

Gaming

Programming

Can't install tools with `dotnet tool` command