Github Windows 'Failed to sync this branch'

Question

I am using Github Windows 1.0.38.1 and when I click the \'Sync\' button after committing, I get the error

Answer 1

I had the same problem. In my case git could not find the global variable %HTTP_PROXY%, simply because Windows was not providing/using it.

I solved it by excluding the variable from the git config file (located in %USERPROFILE%\.gitconfig):

[http]
#   proxy = %HTTP_PROXY%