Troubleshooting steps to resolve this error when installing the Diablo II expansion Lord of Destruction

How to remove your Blizzard Authenticator

What to do if you receive an error that your code is already claimed in your account.

Information on unlocking the four extra backpack slots in World of Warcraft, and what happens when you remove your authentication features

Let us know if you run in to an accessibility problem.

Troubleshooting for WoW Companion Application crash errors

Troubleshooting steps for problems installing or patching Hearthstone on mobile devices

If you do not have a decryption key, check the installation instructions for a point of contact.

How a friend can contact Customer Support when she/he can't log in.

Troubleshooting Hearthstone connection issues when using mobile data connections.