So i am not sure why this is happening but I went to check on the encryption users for a couple of our systems and notice that there are way more users in there than I originally put it. It looks like the users correlate to the people who have logged onto that machine. Is there anyway to disable this in the settings so it only adds the user I give it access to?
Sounds like you must have accidentally turn on add local domain users in the product settings.
This will assign the users that have physically logged into to the machine at some Point.
So you just need to edit the product setttings policy, I believe that it is on the 3rd tab.
You will also need to remove the users from the machines on question.
Hope that helps