BLZBNTBNA00000005

Updated: 1 week ago
Article ID: 16531
Relevant Games:

Common Problems

Whoops! Looks like something broke or crashed. Please try restarting the Battle.net app. If that doesn't work, try restarting your computer.
BLZBNTBNA00000005

The Blizzard Battle.net desktop app failed to communicate with the Blizzard Update Agent, which is required to install, update, launch, and uninstall Blizzard games.

  1. Update your drivers and operating system to resolve any compatibility issues.
  2. Run a security scan to remove any viruses or malware infections.
  3. Update or temporarily uninstall any security programs, which may mistakenly identify the login module as a security threat.
  4. Create a new administrator account to resolve permissions issues.
  5. Uninstalling and reinstalling the Blizzard App may resolve rare launcher issues.

Tried everything here?

If the steps above did not resolve your problem, visit our Technical Support forum or contact us.