Troubleshooting steps for latency problems in Diablo III

What to do when you suffer input lag in-game

Troubleshooting performance problems in Modern Warfare II.

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

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

Player tries to log into wow from battle.net and gets disconnected right away

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

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

Information on various types of networks available to the public.

Troubleshooting steps for connection problems