BLZBNTAGT0000083E

This error indicates an issue with installation or patching. Try the following troubleshooting:

1. In the Battle.net App, navigate to the game in question
2. Next to the Play button, click the Cogwheel Icon to bring up an options menu
3. Click Scan and Repair. Once the process is complete, restart your computer
4. If all else fails, try uninstalling and reinstalling the game

Tried everything here?

If the previous troubleshooting steps didn't resolve the problem, you can ask the 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..