VS no workspace on that server could be located
<p>I am using Visual Studio Team Services (was VS Online). I upgraded from Visual Studio 2013 to Visual Studio 2015. When I open my source control projects, I receive this error:</p>

<p>The solution you have loaded is bound to the source control server at <a href="https://xx.visualstudio.com/defaultcollection" rel="nofollow">https://xx.visualstudio.com/defaultcollection</a>, but no workspace on that
server could be located. If you do have a workspace on this server, and you want this solution to be opened under source control,
connect to that server using Team Explorer and then re-open the solution.
The active solution has been temporarily disconnected from source control because the server is unavailable.  To attempt to reconnect to source control, close and then re-open the solution when the server is available.  If you want to connect this solution to another server, use the Change Source Control dialog.</p>

<p>It appears VS 2015 has a setting to adjust. My workspace is stored locally. I have signed into Visual Studio Team Services with the proper account and my workspace folders are mapped. When I open VS 2013, it works fine. How do I enable source control mapping on VS 2015?</p>