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Error codeBlizzard Battle.netWindows PC and Mac
Blizzard Battle.net error BLZBNTBGS80000011
Login fails during maintenance or on a bad connection
The Battle.net app can't log you in. Blizzard says it usually appears while its services are in maintenance, and sometimes because of a connection problem.
How to fix error BLZBNTBGS80000011
Check BlizzardCS and the game's status page, and wait if services are offline.
Restart your modem and router.
Release and renew your IP address and flush your DNS.
Add Blizzard apps to your security software's exception list.
Close other programs and update your drivers and operating system.
Reinstall the Battle.net app if the error stays.
From Blizzard Battle.net's help pages: us.support.blizzard.com, in our words. Checked on 5 November 2026. If the steps do not help, Blizzard Battle.net's own support is the next stop.
More Blizzard Battle.net errors and common problems
- Can't connectApp cannot connect or stays offline
- Update stuckInstall or patch stops at 0 B/s
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- BLZBNTAGT00000BB8Update data could not be downloaded or saved
- BLZ51901016Login error in World of Warcraft
- BLZBNTBTS00000029Patch server reached but no patch data
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