Troubleshooting steps for disconnections in StarCraft II

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.

These errors can be caused by temporary server issues in a specific region.

Troubleshooting for problems installing or patching the World of Warcraft game client

You might be in a raid group! We also have some other steps to fix this issue.

Troubleshooting steps for resolving network problems in World of Warcraft. 

Realm doesn't show up on realm list.

Troubleshooting error "Unable to start up 3D acceleration" in World of Warcraft

ERROR #134 (0x85100086) Fatal condition! Failed to open required archive ... with error: 5

Troubleshooting steps to resolve error message in World of Warcraft.