I used to use Github without any problems on my previous PC. Now, on my new PC, I installed the same NB version (8.0.2) and cloned the same project on Github. It can pull updates but when I try to push I receive the error "authentication not supported". I tried disabling windows firewall but it did not work.
It is not about my Github settings since I can push on other computers. Also I am not using a proxy, I have the same connection and IP as before. Only change is moving from Win 7 to 8.1. Any ideas?
This answer is late, but somebody may still have problems like me. The problem is because netbeans uses your computer locale settings.
Aplly this answer NetBeans 7.1 - unable change to UI language then everything will be ok, even glassfish.