I've downloaded the x-plane demo so I can check how well it runs on my PC before buying the full thing but when I try to run the demo installer I get an error saying "This app can't run on your PC. To find a version for your PC, check with the software publisher".
I'm running Windows 10 and have just wiped / installed a fresh copy of Windows, I'm logged into an administrator account so it shouldn't be a permissions thing. I've tried turning off all the smartsafe stuff but that didn't help. I am using a 32 bit version of Windows but I believe that should be fine?
Is there anything else I can try?