What to do if you cannot log in after you changed your password
A disk error occurred while loading a file required to log in.
A disk error occurred while loading a file required to log in.
Troubleshooting steps when you can log into your account management page but not the Battle.net App
Failed to launch a critical file. Please close all other applications, temporarily deactivate your anti-virus software, and try again. Alternatively, log in as an administrator and try again.