What to do if you can't resync your authenticator.
Unable to install Battle.net Application after downloading from the website.
How a friend can contact Customer Support when she/he can't log in.
What to do if you cannot access the Public Test Realms
What to do if you can't access the Wow Companion as it keeps attempting to log into a trail account instead of your main account
How to reset your Diablo II (2000) password or change the email address registered to the account.
Troubleshooting steps when you can log into your account management page but not the Battle.net App
Troubleshooting an issue where attempting to log into one specific character on a Diablo IV account
Log in with Blizzard allows third-party sites and apps to extend the Blizzard experience and leverage Blizzard services.
Information about why you may not be able to post in the forums, and steps for how to fix it.