What to do if you experience high latency or frequent disconnects.

What to do if you internet service provider (ISP) is encountering connection issues.

Information on various types of networks available to the public.

Instructions for troubleshooting your network to allow Blizzard services to work properly.

Troubleshooting steps for connection problems

Troubleshooting steps for latency problems in Diablo III

Troubleshooting performance problems in Modern Warfare II.

Comprehensive troubleshooting for any technical issue you encounter that does not have its own support article

Security software which can be used to resolve virus and malware infections.

How to report a bug in Diablo III