How to report a bug in Diablo III
This article explains the process of speaking to a Game Master (GM).
Troubleshooting for unresponsive mouse cursor issues in Diablo III
Troubleshooting steps for error "Game Initialization Failed" when launching a game
World of Warcraft does not support 32-bit operating systems.
These errors can be caused by temporary server issues in a specific region.
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How to block communication from another player in Diablo III.
Diablo III System Requirements