The recent bug happened to me as I tried to download the new Call of duty Warzone, seams like it's something that also affected a big amount of people.
If you are looking to Play wow or any other game you can simply go into the folder and press the EXE file for the game.
Here is some different way to fix it:
- Restart your computer.
- Close all blizzard / Battlenet related stuff in task manager (CTRL+ALT+DEL to open it)
- Reinstall Battle.net (this will not reinstall all your games or addons just the Battle.net)
- Make sure that you had disk space for the last Battle.net update
Here is also a video that are some people say have helped them:
If nothing in this articles help you then it probably just to wait for blizzard to fix the issue, make sure to see there twitter for the latest news:
Still working on the login issues, no ETA at the moment. We do apologize for any inconvenience.— Blizzard CS - The Americas (@BlizzardCS) March 13, 2020