I share a common work station with a coworker. We each log in with our own usernames. My user account has Admin privilege. In order to protect several spreadsheets with confidential data, I decided to limit his access by right clicking on the folder and going to Properties, then Security. Then I changed the permissions under his user account to not even allow him to read the folder or its contents.
I doublechecked that under my user account I was permitted. But after I hit apply, I found that even I could not access the folder now. It seems the computer read his account and my account as being in the same group.
Does anyone have any solution how I could restore access?
(Yes I realized I really made a dumb mistake here.)