I installed Win 10 update to Build 16299 and now Diablo 3 can't initialize D3D. I have a GeoForce card with the latest driver as of March 9, 2018.
# 1 Mar 9, 2018
# 2 Mar 10, 2018drogoscg2,
Could you try the following?
Please navigate to your Diablo III game folder (default location is C:\Program Files (x86)\Diablo III) and then right click on the Diablo III.exe file. Select Properties, then left click on the Compatibility tab in the top section. Look for the option for disabling Full Screen Optimization and place a checkmark in the box next to it. Click OK and then do the same for the Diablo III Launcher.exe file.
Then, move to the x64 folder that's in the Diablo III game folder and do the same steps for the Diablo III64.exe file there
Test the game again then and see if still get the error message.