What to do if you can't log in after patching WoW

Unable to enter overcrowded WoW Classic realms

Troubleshooting steps to help you connect to Diablo III

What do if your character falls through the world in World of Warcraft

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Enabling the Command Key + Click combination on Mac systems.

Troubleshooting steps for connection issues in Heroes of the Storm.

Troubleshooting the Diablo II (2000) installer.

The game cannot log in due to corrupted cache data in the Users/Shared/Blizzard directory, or the directory's permissions are preventing the game from accessing the Users/Shared/Blizzard directory.

Troubleshooting steps for latency and disconnections in Warcraft III: Reforged