BLZBNTBTS0000005D

This error occurs when the Blizzard Update Agent is prevented from launching properly. This is usually caused by missing or corrupted Agent files. Follow the steps below to resolve the issue.

1. Restart your computer to resolve problems caused by programs and services running in the background.
2. Uninstalling and reinstalling the Battle.net desktop app may resolve rare launcher issues.
3. Configure your security software's exception list to allow Blizzard applications to run.
4. If all of the above fails, try updating or creating a new Windows account to resolve permission issues with your operating system (Windows 10 and 11 only)

Tried everything here?

If the previous troubleshooting steps didn't resolve the problem, you can ask the Blizzard player community for help on the tech support forums (if available) or other community gaming sites. Local computer or network technicians may also be able to help if you've exhausted all other resources..