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Errors: BLZBNTBTS00000029, BLZBNTBTS00003

This error occurs when you have connected to our patch server but you cannot download patch information. Follow the steps below to resolve the issue.

  1. Run Software Update to be sure you're using the most recent version.
  2. Close any running background applications. Programs running in the background can interfere with the game. 
  3. Run the game in Administrator Mode. Our games require administrator privileges to install, update, and run properly.
  4. Disable or temporarily uninstall any security programs. Security software may interfere with the Battle.net Update Agent and prevent it from running properly. 
Advanced Troubleshooting
  1. If you're using wireless internet, try switching to an optimized wired connection.
  2. Check your network configuration to find any issues with your firewall, router, or port settings.
  3. Check your Proxy and Work Offline settings. Some advanced internet settings may prevent the Update Agent from connecting to our servers. 
  4. Check for 802.1X and disconnect if it is enabled. Some networks require an 802.1X authentication to connect to the internet, which can prevent Blizzard games from connecting

Tried everything here?

If you have tried all of these steps and still require assistance, visit our Technical Support Forum or contact us.