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Access to DFS not working correctly

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HI all,

My issue is logon time.

I have DC1 and DC2 and file servers on same site, DFS is running on both DCs. All fsmo roles are in DC1.

To test the high availability :

  - I isolate DC2 on its own internal network,

  - file servers are previously replicated from prod and running in the internal network.

  - I add 1 user machine to this network and test the logon.

  - it takes 5 to 6 min, stuck on welcome screen, then successfully login and I can access all dfs shares.


Using Process monitor on the user machine, I can see that there is a process that takes around 75 seconds repeating 4 times.

class: file system

operation : ReadFile

resuilt : success

path : \\mydcname\pipe\netdfs

duration : 75 s

So it appears to be related to accessing the DFS,

If I compare logon wiith same user machine in domain network, then this task takes only few miliseconds.

No relevant events on DC2 I can find and relevant logs in windows\debug\

I can't access DFS namespace from server manager in DC2 too. I understand that's normal as it doesn't have pdc role.

Domain functional level : windows 2003

Any tips to advance ?

thanks




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