Game update stuck at 99%

I am on windows 10. The game is fine for a long time. But last patch, my game update stuck at 99%. It shows 266.24kb remaining and then complains about internet connection. I followed the trouble shooting faq. clean the cache, check service, turn off firewall and security software, uninstall and reinstall the installer and the game, … etc. I also tried my cell phone hotspot still the same thing. It still stuck at the same position.

In the meanwhile hearthstone updates and plays fine.

What should I do?

Try clearing the BattleNet app launcher cache files:

Thx for the reply. I tried and the problem persisted …