Q:

Network error: The specified network name is no longer available

I'm receiving this message after getting a list of files. And trying to move a file out of the list. There is no Antivirus software installed on this server.
The server is Win Server 2003 SP2.

A:

Do you have Symantec Endpoint Protection 11.0 installed?
According to the following Microsoft article, the issue may be due to Symantec Endpoint Protection 11.0.  If you have it installed, consider upgrading or removing it.
https://support.microsoft.com/en-us/kb/961293

