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If you have lost access to your account, our automated recovery process can help.DIY: Change Your Email Address Self-Service
Change your Blizzard account email address on this page.DIY: Change Your BattleTag Self-Service
You can change your BattleTag in Account Management.
Troubleshooting steps for latency or connection issues when playing Blizzard games.BLZBNTAGT00000BB8
Game or Blizzard services connection error BLZBNTAGT00000BB8Diablo III Locking and Crashing
Troubleshooting steps for resolving lock ups in Diablo III.