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 disconnection issues in Warcraft III.
Follow these steps to troubleshoot problems with your low-speed or wireless internet connection.
Troubleshooting steps for lag issues in Warcraft III: Reforged
There's a problem with the connection to the Blizzard servers.
Troubleshooting for installation-related problems on Mac.
Problems with patching may be resolved by disabling the read-only setting on system folders.
Information about troubleshooting problems with the Blizzard Battle.net friends list
Steps on how to close down background applications and processes.