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DFS / DNS / Netbios problems

Posted on 2014-03-12
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Last Modified: 2014-08-07
Randomly having trouble connecting to DFS over my network.  Everything was working great for about a year.  Users could connect to \\domain\DFSshare or \\domain.local\DFSshare without issue.

About a month ago the domain functional level was raised to 2008R2. Now I seem to have connection issues with NetBIOS or dns depending on how the user mapped the drive.

Received a bunch of calls this morning that mapped drives could not be found.  Two of the calls were laptops right next to each other. Laptop1 using \domain\DFSshare and Laptop2 using \\domain.local\DFSshare.  

I tried flushing DNS on both with no luck. On Laptop1 I disconnected the drive maps and reconnected them using domain.local instead of domain. On laptop2 I had to do the opposite to connect.

Occasionally IPCONFIG /RELEASE and a reboot would fix but not always.

Anyone have any ideas on troubleshooting this?
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Question by:pmetech
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costanos earned 500 total points
ID: 39923809
Have you rebooted your DCs / DFS root / AD / DNS servers since the update or since the issues started?
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