If you select a folder in the Source Control Explorer​ that has an extremely large number of files, the Source Control Explorer may take a long time to load, effectively locking up. If you close Visual Studio and re-open, source control will attempt to open at the same location and the same thing happens. Rebooting will not solve this problem. Here's the solution: Open the Task Manager and end the Devenv process to close Visual Studio Bring up the VS command prompt from the start menu and run Devenv ......