I\'m getting this issue while logging in on GitHub on Android Studio:
Can\'t login: Can\'t get user info 404: Not found
In host you only have to put 'http://github.com'
Nothing more
I have faced this problem too. Try using token to login.
Log in to github.com on the browser. Go to Settings -> Developer settings -> Personal access tokens. There you can create a new token and then, go back to Android Studio, select Enter Token at the login prompt.
I'm working on 4.1.1 Android Studio and it didn't allow me to log in with Login + Password neither.
So I succeeded generating a token from Github (Account -> Settings -> Personal access tokens - > Generate new token), but make sure before generating the token to check the "repo", "gist" and "read:org" options.
Everything's working fine from there.
Have fun coding !