Can't delete file "Icon?"

Mac OS

Can't delete file "Icon?" Hi, I have a QNAP TS-412, I use files sharing with several MAC, so far everything works fine except that in a sub-directory of the QNAP, I have a file Noted "Icon?" size 0 byte and no attribute that I can't delete. System report that the file is in use and cannot be deleted. So far what I did: -Restarted both QNAP and MAC -Tried to delete the complete directory -When ... more ...Statistics : 1 Post || 39 Views Post by Pinco