I'm going back and forth with a vendor about their app, which is officially supported on x64 but will not install on Win 7 x64 in my environment. It installs properly on Win 7 x86.
It's an old app, with an MSI wrapping a Wise installer. The same issue occurs whether I run the MSI itself, or extract the Wise installer and use that directly. The errors indicate the app is trying to write to C:\Windows\System32 which as I undersand it should redirect to C:\Windows\SysWOW64. My guess is for some reason this is failing, and the app is still trying to write to System32, which it's prohibited from doing.
Anyway...I actually did manage to get it to install by using the Application Compatibility Toolkit to create a shim for it. But that said, the vendor claims it should install on an x64 system with no special considerations. They claim to have tested it again and cannot duplicate my problem.
I would really like to understand what's going on here, specifically why the app works for them but not me, under supposedly similar circumstances.
I have domain-joined Win 7 x64 Pro systems, and have tested both with a standard Dell image, and on different hardware with an image created from a Windows install disk. Same exact issue on both. I'm logged on as an admin, right-click "Run As Admin," UAC is off, etc.