What to do if you cannot change the email or phone number that shows on the login screen because the field is greyed out

Can't log into Overwatch 2 with an error "Unable to authenticate"

What to do if you can't finish authentication before the message told you to check authenticator vanished too soon.

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

Troubleshooting browser login and loading issues.

What to do if you are unable to add your phone number because the wrong country code is showing.

Troubleshooting steps when you can log into your account management page but not the Battle.net App

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.

What to do if you cannot log into an existing account or link your existing mobile account to Battle.net.