[Solved]fatal: unable to access : Could not resolve host: github.com

When you have not pull or push from your Git repository for some time, you might face such an error. To resolve, run the following:

git fetch

Alternatively, if the above does not work, this might help (link below):

git config — global http.proxy http://proxyuser:proxypwd@proxy.server.com:8080

Could not resolve host: github.com · Issue #4872 · desktop/desktop