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 connection problems
Troubleshooting steps for performance-related problems.
Troubleshooting game or Blizzard services connection error BLZBNTAGT00000BB8
Information on error message BLZBNTBGS8000001C.
The Blizzard Battle.net desktop app is unable to find your game installation in the directory selected.
The Blizzard Update Agent could not install in the specified folder location.
Information on error BLZBNTBTS0000005D
Troubleshooting steps for resolving error message BLZBNTBNU00000007.
Troubleshooting step for connection-related problems on Windows.