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  • Sort of duplicating, but I'm not aware of what permission in Windows maps to "hide the existence of this file"? Commented Jun 28, 2012 at 16:06
  • @Mordachai: Directories have permissions. Denial of access to a directory hides the existence of all files in that directory. One minor extra detail: in default configuration, Windows doesn't check the permissions on all directories in the path though, so given a path like "C:\a\b\c.txt", a denial in a's ACL won't usually prevent access to c.txt, though it will only be accessible via foreknowledge of the path (i.e., the user won't be able to browse to it). Windows can be configured to check the whole path, if desired though. Commented Jun 28, 2012 at 16:11
  • That's my understanding as well. But in this case, I'm just talking about a single file in a folder that is executable (traversable). So the user has permissions to list the dir, can see other files, but one file is "invisible" (and not due to 'hidden' attribute). I am able to see the file as local admin, just not as a standard user. But standard users can see all other files. I was unaware (and remain so) as to what permission exactly controls such per-file-visibility? Commented Jun 28, 2012 at 16:20