26 Oct 2017
This post shows you how to solve the git error fatal: unable to access '\/.config/git/config
I had this error when trying to get GitHub Extension for Visual Studio to work with my GitHub repository.
To solve this error you need to add an environment variable called HOME and point it to the folder where you checkout all of your git repositories to. Mine was C:\Code\GitHub
To make sure, I restarted my PC instead of just Visual Studio and it worked great.
Let me know if it works for you.