Error#0 assertion error! Main Thread

[Talk-vashj]

I had the auto-install Nahimic update as well. I fixed the issue finally by doing this:

1. With the Battle net desktop app opened and WoW selected click on Options
2. Select Game Settings
3. Find WoW and check the box for Additional command line arguments
4. In the new box enter the command for the desired DirectX version:

• -d3d11

5. Click Done to save.