Corrupted and damaged game files can create a wide variety of problems and errors.
Out-of-date drivers and operating systems can cause a variety of issues, and are one of the first things to check when a game is having problems.
Information about this error when redeeming a key in your account
How to view and send the game key for a gift
Information about troubleshooting problems with the Blizzard Battle.net friends list
Information on what to do when a game update is stuck at 0 B/Ss
How to change the language settings in your Blizzard games
During technical troubleshooting, it is sometimes necessary to fully uninstall and reinstall a game.
Information about the global play feature of Blizzard games.
What to do if your game doesn't launch after clicking Play.