Ytukyg

I have a build for a .NET solution that is running in a private agent. The solution contains both .NET Core 2.1 and .NET Standard 2.0 projects.

Some of the nuget packages installed are the following:

• NETStandard.Library v2.0.3


• Microsoft.AspNetCore.Mvc v2.0.0


• Microsoft.NETCore.App v2.1.5

The build fails when trying to restore the nuget packages with the following error:

"F:Agent01w141sxxxxxxx.sln" (Restore target) (1) ->
(Restore target) ->
C:Program Filesdotnetsdk2.1.500NuGet.targets(114,5): error : Unable to load the service index for source https://xxxxxxxxxx.pkgs.visualstudio.com/_packaging/xxxxxxxxxx/nuget/v3/index.json.
C:Program Filesdotnetsdk2.1.500NuGet.targets(114,5): error : Response status code does not indicate success: 401 (Unauthorized).

Build task is the following:

This is the content of %appdata%NuGetnuget.config file in the build agent:

<?xml version="1.0" encoding="utf-8"?>

<configuration>

  <packageSources>

    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />

    <add key="MyFeed" value="https://xxxxxxxxxx.pkgs.visualstudio.com/_packaging/xxxxxxxxxx/nuget/v3/index.json" />

  </packageSources>

  <packageSourceCredentials>

    <MyFeed>

      <add key="Username" value="LocalBuildAgent" />

      <add key="ClearTextPassword" value="xxxxxxxxxxx" />

    </MyFeed>

  </packageSourceCredentials>

</configuration>

I already checked a few similar questions but so far I wasn't able to find a solution for my problem.

Some notes:

• Personal Access Token is NOT expired


• This particular build runs successfully in other build agents


• There is at least 1 build with a "nuget restore" task that was run successfully using this agent (regular nuget restore task, NOT .NET Core)


• Tried restarting the build agent, without success


• Tried specifying a specific version of nuget before the restore, without success


• .NET Core SDK latest version in the build agent is 2.1.500 (multiple versions installed)

What am I missing? How to fix this issue? Why can't I restore the packages using the dotnet restore command?

UPDATE:

Packages are restored without errors when using the old Nuget Restore task as follows:

UPDATE 2:

I am able to restore the packages using the .NET Core task v1:

Or using v2 task with argument --force:

I found a solution - add the following package source to %appdata%NuGetnuget.config:

<add key="Microsoft Visual Studio Offline Packages" value="C:Program Files (x86)Microsoft SDKsNuGetPackages" />

Complete file looks like this:

<?xml version="1.0" encoding="utf-8"?>

<configuration>

  <packageSources>

    <add key="Microsoft Visual Studio Offline Packages" value="C:Program Files (x86)Microsoft SDKsNuGetPackages" />

    <add key="nuget.org" value="https://api.nuget.org/v3/index.json" />

    <add key="MyFeed" value="https://xxxxxxxxxx.pkgs.visualstudio.com/_packaging/xxxxxxxxxx/nuget/v3/index.json" />

  </packageSources>

  <packageSourceCredentials>

    <MyFeed>

      <add key="Username" value="LocalBuildAgent" />

      <add key="ClearTextPassword" value="xxxxxxxxxxx" />

    </MyFeed>

  </packageSourceCredentials>

</configuration>

Also, check Regression in .NET SDK 500: 'dotnet tool install' fails with 401 (Unauthorized) when there is a private feed in NuGet.config #7524. This problem seems to be caused by .NET SDK 2.1.500.

Another workaround would be to uninstall that version:

The issue is not present in .NET Core SDK 2.1.400, e.g. it goes away
when .NET Core SDK 2.1.500 is uninstalled, and reappears when SDK
2.1.500 is installed again.