to safely execute this command and restart Explorer to see the changes?

Let’s break it down.

That would be invalid because:

The reg add syntax is:

The command reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /f /ve is a registry modification used to

reg add "HKCU\Software\Classes\CLSID\86ca1aa0-34aa-4e8b-a509-50c905bae2a2\InprocServer32" /f /ve Use code with caution. Copied to clipboard