Troubleshooting issues with your game settings changing back to default when you log back in to the game

A permissions issue is preventing the Battle.net desktop app from renaming a file during an update.

Troubleshooting your security programs can resolve issues preventing you from installing or using Blizzard software.

Game crashes or doesn't load after pressing "Play" in the Battle.net app or crashes mid-game

What to do if you are seeing an error after starting the game

This error usually happens when our patch servers are down, but could be caused by local network issues as well.

Information regarding your computer shutting down or restarting while playing games

The Blizzard Battle.net desktop app requires the Windows Secondary Logon service to be enabled.

A guide on running a traceroute on Windows and Mac.

How to run a pathping on Windows and Mac.