Troubleshooting for errors installing a downloaded Battle.net setup.exe file.

Information on error BLZBNTBNU00000004

What to do if you corrected your country of residence in your account details but still you can't add your phone number to your account

What to do if you can't resync your authenticator.

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

How to resolve being unable to log in due to this error

What to do if you can't save your communication preferences in the Account Management page.

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

Failed to open a required file. Please check your internet connection and try again.

What to do if you can't claim your Call of Duty: Black Ops 4 key