key not valid for use in specified state

On the latest update for iTunes for Windows the updated couldn't complete and said to download the full version. When I ran the iTunes64Setup I got the following message " key not valid for use in specified state". I then uninstalled iTunes, rebooted, ran the iTunes64Setup and still got the message " key not valid for use in specified state". I'm now without iTunes. I did a Google and searched this community and couldn't find anything on this. Can someone guide me to a solution?

Thanks,

Mike

Windows 8.1 Enterprise

trying to get to iTunes 11.3.1.2x64