Since I changed my windows password I can no longer type into a checked out file in Visual Studio 2013! Where before I just needed to start typing and it would check out the
I'd like to add Alexander's comment as answer, since it helped me exactly to solve the issue:
Clean R# (ReSharper) caches by deleting all folders (and files) from the path
C:\Users\{User Name}\AppData\Local\JetBrains\ReSharper\v8.2\SolutionCaches\
and then reopen the solution.
Note: (Thanks to Antak for providing this info!)
You can paste
%userprofile%\AppData\Local\JetBrains\ReSharper\v8.2\SolutionCaches
into file explorer's path textbox (open it via Win+E, or use Win+R and paste the path into the command window), this will resolve the physical path into your user's directory automatically.