Git Bash and Git GUI freezing just after opening

I have a fresh git installation on my windows 10 machine, but I am
unable to use the Git Bash or the Git GUI because the program freezes
just after opening.
The only difference I have made on my machine was to update Windows 10
Pro to it's latest version (build 14393.105) and change the default
Documents folder to another partition.
I really need to fix this. How can I get some help?