BLZBNTBGS8000000E

Try the following steps to resolve the error.

1. If you're using a wireless connection, optimize your internet connection to rule out a connection issue.
2. Configure your security software's exception list to allow Blizzard applications to run.
3. Try closing background applications to resolve any software conflicts.
4. Update your drivers to resolve any compatibility issues.
5. Repair Disk Permissions to resolve any permission conflicts with logon modules.
6. Deleting the Battle.net cache folder can resolve problems with the logon module.