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.
Troubleshooting steps for performance-related problems.
How to disable the Xbox DVR in Windows 10 Anniversary
Troubleshooting for problems installing or patching the Starcraft II game client
How to reset in-game options
How to install a Blizzard game you already own on a different computer
Changing language settings for game and/or communications from Blizzard
Purchased a gift code for the wrong region.
If you encounter a bug in one of our games, please report it to us.
How to move a game account to a different Blizzard account