I bought a new lappy and got windows 8 pro with it ,recently i updated it to 8.1 preview and just from a few days from now i am getting program compatibility pop-ups when i install some new softwares anti-viruses and stuff ; in correspondence one of your threads i tried everything pgedit.msc & opening mmc (where i didnt find local group policy editor) if the problem is related to windows 8.1 preview upgrade please let me know ,also guide me if there is a way to solve the problem or to switch back to earlier version of windows(8pro).
Once you have installed the software, right click and select properties.
Select the Compatibility Tab
Select Run in Compatibility Mode, then select the version of windows the software was designed for.
Apply the settings
This should solve your issues.
If you created a recovery partition via Windows, before you installed 8.1 then you could restore your machine. link
You could always factory restore your machine is you are unhappy with Windows 8.1
I don't believe the 8.1 is your issue. You probably would have had issue installing the software in Windows 8 period.
Ms changed the way how the GetVersionEx API works, so some tools run into trouble:
Operating system version changes in Windows 8.1 Preview
The App developer must add the supportedOS ID into the manifest:
So call the support of the tools.