I am having a similar issue to the user who posted here.
Basically, a folder in my Downloads (which shouldn't have any special permissions) won't allow me to delete it. When I try, I get a message stating
"You'll need to provide Administrator permissions to delete this folder"
I am logged in as an administrator (the only account on the PC besides "Guest"). When I click continue (with the admin icon on it), I get another message
"You require permission from JOHND0447/johndoe to make changes to this folder"
I'm not sure where the string with part of my username + 0447 is coming from. Anyone else ever encountered this?