Just a tip for everyone that this has happened to. I was trying to uninstal FSX but kept getting this message:

Error: 0x80040702 - Failed to load DLL:: GameuxinstallHelper.

I hunted and hunted, then came across this address:

https://support.microsoft.com/en-us/...b-e9f927e1eb4d.

And I can tell you - It Works, for installing as well as uninstalling.

Just thought I'd share this with you.

Allan