Blizzard games run best on default settings and may not support all aspect ratios

Minimum and recommended system requirements for Call of Duty: Black Ops 4

Information on how to contact Blizzard Entertainment for any accessibility concerns with our games, support or products.

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.

Troubleshooting steps for performance problems

Troucleshooting steps for crash problems

How to manage your Battle.net profile visibility and chat settings