Error 64: "The specified network name is no longer available"


Hopefully you can assist.  I have two DMZ networks. - windows 2008 r2 file server - workstation windows 7

Ports 139 and 445 are open.

My problem is i am not consistently able to connect to the file server.  Sometimes i'm able to map a network drive and sometimes i am able to browse the share.  It is not consistent.  Please assist.
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Manpreet SIngh KhatraConnect With a Mentor Solutions Architect, Project LeadCommented:
Are you using TMG ?

System error 64 - the specified network name is no longer available

Windows 2008 Server shares – the specified network name is no longer available

- Rancy
Rich WeisslerProfessional Troublemaker^h^h^h^h^hshooterCommented:
Do the machines in the DMZ use DNS registration for name resolution?  (Or at least static entries?)  WINS?  Or are you relying on NetBIOS broadcasts?
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