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

Minimum and recommended system requirements for Diablo III.

The version of the game you are attempting to play does not match our current game servers.

Standalone patches are downloaded outside of the game launcher or the Desktop app.

Information about Diablo III products and purchasing options

Cannot quit a D3 clan or give the leadership to another person