Troubleshooting steps for performance-related problems.
Memory Diagnostic Tool performs a scan of your computer's physical memory and helps identify possible errors.
Follow these steps to troubleshoot problems with your low-speed or wireless internet connection.
Troubleshooting steps for disconnection problems with the Blizzard mobile app
Damaged windows system files can cause a variety of issues playing games, and should be repaired to prevent problems.
Troubleshooting step for connection-related problems on Windows.
Troubleshooting steps for connection problems with Classic Games.
Information on what to do when a game update is stuck at 0 B/Ss
How to remove your Blizzard Authenticator
Instructions for troubleshooting your network to allow Blizzard services to work properly.