Unable to edit code in Visual Studio 2013 [duplicate]

Question

I've been using Visual Studio 2013 for several months now, and this morning I suddenly started running into a problem where I am unable to edit any of the code files. When I try to type to add or change code, or try to delete code from a file, or try to copy and paste code into a file nothing happens at all. All I am able to do (as far as I can tell) is move the cursor around in the file. Does anyone know what may be causing an issue like this?

Answer 1

This exact thing happened to me. Do you have ReSharper? If so, the solution I found here may work for you. From Alexander's comment in the accepted answer:

Try cleaning R# caches C:\Users{User Name}\AppData\Local\JetBrains\ReSharper\v8.2\SolutionCaches\ and then reopen the solution