We have two users that left the company but their files are still on the server and we need to transfer the work to another user. Is there a way for SAS to password protect files, and if so how can we reverse it so that the new user can access the files.
As far as I can tell there is no way to remove a password fro a dataset if you don't have it. I do remember reading that SAS Tech Support can help out. So I suggest you call them. Any other documented way to achieve this would be a major loophole in the security you wish to apply.
I also suggest you learn from this and have users somehow hand over the info upon departure or chase them down and ask. You can use a password vault like Keepass to help preventing this from happening in the future.