For a while you could just remove all the permissions from the activation nagware on a trial install and it would run fine, and you’d even get updates. At some point they added some service which would periodically check those permissions and revert them, and I was never able to figure out what that process was.

Which means that there is apparently now a hidden user and access tier which exists solely to monitor windows system permissions, and I feel like this is my most noteworthy legacy in a small way.