On one of my machines, I get a return value of null from any GetLocalWorkspaceInfo call. I have isolated to problem to where it even fails for this simple progr
After migrating from TFS2013 to TFS2017 in the company I work for I had the same problem with Workstation.Current.GetLocalWorkspaceInfo.
What worked for me is a call to Workstation.EnsureUpdateWorkspaceInfoCache:
TfsTeamProjectCollection tpc = TfsTeamProjectCollectionFactory.GetTeamProjectCollection(new Uri(""));
VersionControlServer tfServer = tpc.GetService();
Workstation.Current.EnsureUpdateWorkspaceInfoCache(tfServer, tfServer.AuthorizedUser);
I added the above code lines to the constructor of my TFS proxy class that uses GetLocalWorkspaceInfo.