How to submit suggestions for Diablo 3
What to do if you are unable to install or patch Diablo III
Troubleshooting steps for Diablo II (2000) crash errors
Troubleshooting steps for resolving lock ups in Diablo III.
Troubleshooting steps to resolve performance problems in Diablo III.
Troubleshooting for error 1016 in Diablo III
Information on recovering a lost Diablo III account
How to reset your Diablo II (2000) password or change the email address registered to the account.
Troubleshooting steps for latency and disconnections in Diablo IV.