What to do if you internet service provider (ISP) is encountering connection issues.
A guide on running a traceroute on Windows and Mac.
Instructions on how to use Looking Glass.
Information on various types of networks available to the public.
Diablo II System Requirements
How to run a pathping on Windows and Mac.
Instructions for troubleshooting your network to allow Blizzard services to work properly.
Security software which can be used to resolve virus and malware infections.
If you encounter a bug in one of our games, please report it to us.
How to resolve the issue when the mouse cursor is missing