World of Warcraft was unable to start up 3D acceleration

Got this message suddenly. I can no longer play in full window mode. I have updated video driver and uninstalled Discord. And I’m running as administrator. Any ideas anyone? Thanks in advance!

Windows 10 64 bit i7 core 4790
Radeon R9 290
DirectX 12

I’d give this a go in the tech support forum

Did your windows recently update?

I believe so. I have noticed some downloading in the background and when I go to shut down, it seems to do a partial update. I forced it to finish all it’s updates to see if that fixed the issue but it did not.

Posting to tech support. Thanks all!

Probably something to do with the windows update, good luck