When you say that it is showing as a VLC media file, what is the actual file extension that is given? It might be that for some reason someone has changed the program that is associated with this file type/extension to "VLC". You might need to turn on file extension display in Windows Explorer first (Windows Explorer -> Tools -> View -> Advanced settings -> Hide extensions for known file types should be unticked).

You can change the program associated with a particular file extension through Control Panel but let's find out if that's needed first.