Computer Management Open Files

I recently installed a new Server 2012 R2 Standard and it acts as a file server only.  It is not a domain controller and doesn't host any apps.  In Computer Management > Open Files, files will remain "open" in this window even after the client closes the file.  The "open" file will eventually disappear, and the delay can range from minutes to several hours.  Also, the attached screenshot displays many network shares that have been accessed by clients, and these also linger as "open".  These aren't even open files.....they are just directory paths.  Why are these items appearing?
Tom MathiasAsked:
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FOXActive Directory/Exchange EngineerCommented:
when dealing with open files, also check open sessions to see what is open there.  You may have to close some sessions as well.
Tom MathiasAuthor Commented:
I also see multiple open sessions for the same user on the same computer, which is bizarre.  What would cause that?
Qlemo"Batchelor", Developer and EE Topic AdvisorCommented:
PCs cache share info. So even if you do nothing now, you might have displayed share content some time ago. To allow for fast access, the server caches those accessed shares for some time. If the session is no longer in the server cache, it lasts much longer to re-establish a connection and access files and folders.
The same might happen with "open" files if they are not closed properly. The ancient NetBIOS protocol allowed disconnected usage of files, and so "open" was not necessarily related to "in access at the moment". But if the file gets closed poperly, the open file info in the share cache is removed.

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Windows Server 2012

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