Troubleshooting for WoW Companion Application crash errors

What to do if the game crashes or disconnects while doing the quest "The Master of Lies"

What to do if you experience World of Warcraft crashing or freezing with the Windows error message, "Not Responding'.

Information on error BLZBNTBNA000001F4.

What to do if you are unable to launch WoW and the error message mentions 3D accelerator card.

No sound when playing World of Warcraft. Other applications and games have sound.

How to reset in-game options

Information about what to do if you are experiencing reduced performance on the Beta version of the Battle.net Desktop App

Troubleshooting Error #0 in World of Warcraft

We have detected that your video driver may be out of date which may cause performance issues when playing [game_name].