Hey guys, i'm sure a lot of you have the Annual Pass from WoW and got this problem when trying to play Diablo 3.
After you got pass the login screen and recieve that license error, here is what you have to do:
1. Go to Control Panel - Programs and Features - search Diablo 3 - Uninstall everything 2. Go to your Battle.net Account - Diablo 3 - Download Game Client 3. Change the English-US with English-EU - click SAVE!!! 4. Download client like this and reinstall - guarantee it's going to work! 5. Like this video if you it helped you :)