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
Troubleshooting step for connection-related problems on Windows.
Follow these steps to troubleshoot problems with your low-speed or wireless internet connection.
Troubleshooting steps for performance-related problems.
Use the steps below to troubleshoot installation issues for Blizzard games.
How to enable maximum download rate
During technical troubleshooting, it is sometimes necessary to fully uninstall and reinstall a game.
Information about the global play feature of Blizzard games.