Corrupted and damaged game files can create a wide variety of problems and errors.
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.
Follow these steps to troubleshoot problems with your low-speed or wireless internet connection.
Troubleshooting steps for performance-related problems.
Information and troubleshooting on error BLZBNTBNA00000005
Troubleshooting step for connection-related problems on Windows.
Troubleshooting steps for latency problems in StarCraft II
Information on error BLZBNTBTS0000000B
How to remove your Blizzard Authenticator
A guide on running a traceroute on Windows and Mac.