When a folder looks empty from the network but has files

I just saw an interesting thing. A folder appeared to be empty when viewed from a different computer on the network, but had files in it when viewed on the local machine. I made sure both computers were showing hidden files, but that shouldn't have mattered because I was using dir /a in an administrative command prompt.

The administrativeness of that prompt mattered because the folder in question was only accessible to administrators. I understood what was going on when I remembered that UAC always limits the tokens that result from non-domain network authentication. (I was just accessing a different computer on a workgroup with username and password.) It's kind of bizarre that I just got an empty directory listing rather than an error, but that's how it is, apparently.

Changing the security settings on that folder let me access it from the network.