build server not finding nuget package

We are setting up a CI server for our UWP app and the build fails when using a system accout.

almost identical to:  https://stackoverflow.com/questions/43276107/jenkins-not-finding-a-nuget-package

I'm setting a Jenkins CI server. I got the first step to run properly:

nuget restore -NonInteractive  -ConfigFile Nuget.config -Verbosity Detailed -NoCache

That works properly, but when I want to compile the app with:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\15.0\Bin\MSBuild.exe

and ${WorkSpace}\src\Weather.App.csproj It throws this error:

C:\Program Files (x86)\Microsoft Visual Studio\2017\Professional\MSBuild\Microsoft\NuGet\15.0\Microsoft.NuGet.targets(178,5): error : The package HockeySDK.Core with version 4.1.6 could not be found in C:\WINDOWS\system32\config\systemprofile\.nuget\packages\. Run a NuGet package restore to download the package. [C:\Program Files (x86)\Jenkins\workspace\MyApp\Weather\Weather.App.csproj]

The weird thing is that it the Hockey package clearly exists in the path: 

a flishhorse fellow