I am attempting to switch to the TFS 2015 SDK dlls (Version 14) for a few reasons. First, they are in nuget and second, the 2013 SDK dlls (Version 12) require the 32-bit fla
Copy file Microsoft.WITDataStore64.dll in folder C:\Windows\System32
I had to add the dll to the startup-project of my solution to get this to work. example:
MyTFSApp (windows client) nuget package Microsoft.TeamFoundationServer.ExtendedClient installed or Microsoft.WITDataStore32.dll added to the bin folder
MyTfsLibrary (class library with code accessing WorkItemStore) nuget package Microsoft.TeamFoundationServer.ExtendedClient installed
Try copying those Dlls from the GAC into your local bin. Nuget packages are usually create references to the bin, so if your program is looking there instead of the GAC that could be why it is throwing the error.
None of the above worked for me. I had to copy that file to my C:\Program Files (x86)\Microsoft Visual Studio 14.0\Common7\IDE folder (found this out by using procmon to see where my app was looking for it).