Troubleshooting for game crashes with error "The application encountered an unexpected error"
Some overlay programs can cause Blizzard games to crash.
What to do if you are seeing an error after starting the game
Information for troubleshooting Modern Warfare II in-game technical issues
Troubleshooting steps for crash problems
Troubleshooting steps for low performance and game crashes on mobile devices
Troubleshooting for Battle.net desktop app crashes.
Information regarding crashes accompanied by a Blue Screen
Troubleshooting steps for Diablo Immortal lockups and crashes when playing the game on a desktop device.
Information on Crash Bandicoot 4: It’s About Time System Requirements