What to do if your game doesn't launch after clicking Play.
Information about why Diablo III may show as Starter on an account
Troubleshooting steps to help you connect to Diablo III
Information about issues with quest progress getting reset after upgrading from the trial version of Diablo III to the full version
What to do if you deleted your mail with the challenge rift reward in Diablo III.
Information on recovering a lost Diablo III account
Information on the Diablo III Account Ban or Suspension, and how to appeal the decision.
Troubleshooting steps for latency problems in Diablo III
If you receive errors when loading your hero, try the following steps to solve the problem
Minimum and recommended system requirements for Diablo III.