Here is the scenario.
I had my Windows 8 x64 desktop with App-V 5.0 SP2 installed and had added Hotfix 5. All was well.
I upgraded to Windows 8.1. Current packages continued working fine. Decided to add another package. I received error C8007005 on Add-AppVClientPackage. After researching and trying some things, I eventually tried an old package that worked elsewhere …