Hi everyone!
i'm having a trouble with accessing some files. This morning i made a back-up from my company PC to an USB HDD. We use a workgroup and we access via users managed by a server.
This afternoon i tryed to access the files from my computer at home, and I noticed I was asked to acknwledge i'm an administrator simply to access the folder in my USB HDD.
Then i noticed strange security settings on certain files: 
On other older files I don't have any trouble entering: 
I can't understand this behavior. We changed our server last week and new files seems to be protected in some way.
Can you kindly help me?