The login servers received invalid information

Can't log into Battle.net website or get online when logging with the Battle.net desktop app.

Information on the sms requirement for Call of Duty

More information about authenticator security codes

What to do when a physical authenticator gets out of sync

Information on the Battle.net Authenticator

How to attach an Authenticator to your Battle.net account

Information on payment methods for our various shops.

What to do if the serial number at the back of the physical authenticator is scratched off

How to disable the mature language filter.