Installers for P2 development tools fail, cannot install Spin2 and others

Hal Albach

Been away for quite a while and finally trying to get back into Parallax projects, acquired a P2 EVAL board. However, try as I might, I cannot install any P2 development software such as Spin2/ASM or Proptool, and others. The downloads finish and I extract the files to either default locations or new, empty folders. I open the folder and locate the executable to launch the software and all I get is a message window;
"Windows cannot access the specified device, path, or file, You may not have the appropriate permissions to access them."
This also occurs if I try Ross Higgans Catalina system. Simpleide works fine, no problem there.
My system is a new Gaming Desktop with AMD hardware and 32GB of system ram.
I am completely stumped, hoping that someone here might shed some light on this issue.
Edit:
I have tried the Windows Security not blocking Low Reputation Apps, still get the same error. Many other Windows apps have installed without issue.