Troubleshooting steps for resolving lock ups in Diablo III.
Troubleshooting steps for crash problems
How to resolve being unable to log in due to this error
Troubleshooting for Battle.net desktop app crashes.
Troubleshooting for game crashes with error "The application encountered an unexpected error"
What to do if you are seeing an error after starting the game
What to do if you can't open the Battle.net desktop app, and there are no error messages when you try.
Information on error BLZBNTTAS00000008 - Account Lock - Processing Restriction Requested