title: error NU1101: Unable to find package ''. No packages exist with this id in source(s): Microsoft Visual Studio Offline Packages, nuget.org
body: <p>I manage an application that is continuously integrated via Jenkins.  Continuous integration usually happens via a separate Jenkins server, but I am trying to mimic the process of editing source code, committing to source control and then building in Jenkins on my home PC.  This usually occurs at my office, but I am working from home now and do not yet have a VPN set up, so I am attempting to continue development at home.  </p>
  
  <p>At home, the Jenkins server is my PC, localhost:8080.  Git is our source control manager.  The application's solution builds fine in Visual Studio on my PC.  It depends on some nuget packages stored in a folder on my C: drive.  The source code, including the solution, is also stored in a folder on my C: drive.  In Visual Studio's NuGet Package Manager, these are my settings.</p>
  
  <p><a href="https://i.stack.imgur.com/ACAK0.png" rel="noreferrer"><img src="https://i.stack.imgur.com/ACAK0.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/JE7Pe.png" rel="noreferrer"><img src="https://i.stack.imgur.com/JE7Pe.png" alt="enter image description here"></a></p>
  
  <p>I get the following error message when Jenkins attempts to restore packages during a build.    </p>
  
  <p><a href="https://i.stack.imgur.com/6nxAQ.png" rel="noreferrer"><img src="https://i.stack.imgur.com/6nxAQ.png" alt="enter image description here"></a></p>
  
  <p>The NuGet packages that Jenkins cannot find are the packages in the folder on my C: drive.  It seems that Jenkins is unaware of my Visual Studio NuGet Package Manager settings and my C: drive NuGet packages folder and trying to look in the Microsoft Visual Studio Offline Packages directory at "C:\Program Files (x86)\Microsoft SDKs\NuGetPackages\".  This is confusing, because Jenkins is trying to build the same solution which builds fine on my PC.</p>
  
  <p>My initial thoughts are that the Jenkins build job needs to be configured to "see" the NuGet packages folder which is on my C: drive, but I am not sure how to configure Jenkins to "see" that folder.  Since my solution, the NuGet packages folder and Jenkins live on the same machine, I assumed that Jenkins would have no issues "seeing" the NuGet packages folder on my C: drive.  </p>
  
  <p>What am I missing here?  I appreciate any help.</p>