Information on moving Blizzard games to a different hard drive
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 performance problems in Modern Warfare.
Troubleshooting your security programs can resolve issues preventing you from installing or using Blizzard software.
Troubleshooting steps for connection problems
Troubleshooting step for connection-related problems on Windows.
Blizzard Battle.net desktop app information
Troubleshooting steps for resolving error message BLZBNTBNU00000007.
This error occurs when you have connected to our patch server but you cannot download patch information.
Follow these steps to troubleshoot problems with your low-speed or wireless internet connection.