I ran into the same problem: tried to delete a folder (as admin), but got an error message “You need permissions from MYCOMPUTERAdmin …” Somehow this worked:
I just went into the folder and deleted everything inside. Now when I try to delete the folder, it works fine.
Not sure why, but it seems like you found a similar solution. However, there’s no need to use FileAssassin, just simply highlight the folder contents and delete like normal.
I had the same problem, and I found a fairly simple fix that hasn’t been mentioned yet and probably has the best chance of working.
Simply give full access to “Everyone” in the file’s properties, then delete it right after.
To change the file’s access, as administrator: open the context menu and go Properties -> Security -> Advanced. This should bring up a new window that lists multiple users and their access to the file/folder, specifically Everyone. Select Everyone and click edit. In the following menu, select Full Control, then click OK.
The file should now be accessible to everyone- including you- allowing it to be deleted.