Multiple User accounts Windows 10. One works with Hiz rez dx11. Other limit dx9 low

[Fireball241]

Multiple User accounts Windows 10. One works with Hiz rez dx11. Other limit dx9 lower resolutions and game crashes with dx3d error message if I try to raise it to higher def. Game was installed on other account first. The first account on computer and a local account. So when I created the second account DDO was moved over automatically to it.

Well I was able to install DDO on one User account on my computer with DX11 and High def. On other account on same computer it crashes when I change the rez to high.t 1080p. Also dx9 is greyed out.
??

I installed dx9 june2010. I also deleted use pref file and did repair and resets and reset defaults. I also tried the dxwebsetup.

[Fireball241]

Did a reinstall. Now both Windows User accounts are locked in dx9, but I have high rez in full windows mode. DX errors with Triple Buffer and Vsync checkmarks. So is there a specific fix to get dx10 and dx11 options and Triple Buffer and Vsync?

[Dnarth]

I had issues with dxwebsetup. Try dx end user runtimes june 2010 from Microsoft website. offline installer. Not sure what dx version you have installed but dx12 doesn't seem backwards compatible with dx9's obsolete packages unless you force it with that install.