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.
How to obtain new CD key files in Warcraft III
Troubleshooting steps for connection problems
What to do if you can't claim a beta key for a Blizzard game.
How to obtain error logs for Blizzard games
Troubleshooting steps for disconnection issues in Warcraft III.
Troubleshooting steps for performance-related problems.
Information on what to do when a game update is stuck at 0 B/Ss
If you have issues with the sound in your game, such as skipping, popping, screeching, or no sounds at all, follow the steps below to troubleshoot the problem.
Information about this error when login to Classic Warcraft III