What to do if you experience high latency or frequent disconnects.
Troubleshooting steps for latency problems in Diablo III
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.
Troubleshooting steps for connection problems
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.