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Missing SYSVOL folder on a Windows Server 2008 R2 computer. DFSR Event ID 6002.

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Last Modified: 2015-02-01
We have two Windows 2008 R2 servers and both are domain controllers (SVR01, DC01). SVR01 was the original domain controller and holds the FSMO roles and has the SYSVOL directory. DC01 was promoted to a domain controller and does not have the Sysvol directory. When I look in the event logs of SVR01 I see an error for EventID 6002:

The DFS Replication service detected invalid msDFSR-Subscriber object data while polling for configuration information.

I have tried doing an authoritative/non-authoritative synchronization but the error persists. When I poll the existing replicas I see that DC01 is in state 2 (awaiting initial sync) but SVR01 shows "No instance(s) available." I also see this when I open the DFS namespaces. Only DC1 shows as having a replication folder for SYSVOL. SVR01 is not listed.

How do I fix this?

Thank you
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RantCanSr. Systems Administrator
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Commented:
What does repadmin.exe show? Please post this to help with analysis.  You can also use DCDIAG on the DC that does get the replication to see where the failure is.

Here is a walkthrough to aid diagnosis.

http://technet.microsoft.com/en-us/library/cc738415(v=ws.10).aspx
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Commented:
When I run dcdiag from DC01 I get "DsGetDcName returned information for \\SVR01 when we were trying to reach DC01. SERVER IS NOT RESPONDING or is NOT CONSIDERED SUITABLE." which I assume is because there is no SYSVOL or NETLOGON directories because DFS isn't replicating SYSVOL.

When I use repadmin /showrepl I receive all "was successful" back.
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Commented:
Anything else I can try?
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Also, when I go to Active Directory Users and Computers and drill down to System > DFSR-GlobalSettings > Domain System >  Topology I only see DC01 and SVR01 is missing. The event log specifies the "msDFSR-MemberReference" as the problem attribute. When I try to find this in ADSIedit this entry does not exist. How do I add the SVR01 DC back to this topology?
RantCanSr. Systems Administrator
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Commented:
Are these servers on the same subnet? Does one of them have a DHCP address? Do they show identical times on the clocks? This will affect syncing.

To your comment on 12-5: can you post the entire dcdiag output (removing any specific info) for further diagnosis?  Particularly, I am curious about the KCC service and any associated errors, such as an inability to start or establish a channel. Also, have they ever been properly replicated?  Before recommending a course of action, I would like to take a look at the dcdiag output, as well as the repadmin.

Did you experience any errors when you ran dcpromo on DC01?  It may be necessary to remove DC01 from the domain, delete all records of it using ADSIEdit and try again.
OAC TechnologyProfessional Nerds

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Commented:
The servers are on the same subnet and the times are identical.

I've attached the dcdiag outputs from each server

I didn't experience any errors when I ran dcpromo on DC01. We have demoted and promoted DC01 again as well.

Thank you
dcdiag-DC01.txt
dcdiag-SVR01.txt
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Commented:
Any more ideas on this?

Thanks
RantCanSr. Systems Administrator
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Commented:
Sorry, OP. Had a few days of chaos at the job site.

 I found this previously answered thread here on EE which mirrors your situ, even down to the D4/D2 restore not working.

https://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/2003_Server/Q_28211111.html
OAC TechnologyProfessional Nerds

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Commented:
It looks like that is with NTFRS, but I'm having the problem through DFS. The FRS services are disabled on both servers since they are using DFS for replication
RantCanSr. Systems Administrator
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Commented:
MSFT walkthrough on troubleshooting sysvol replication:
http://technet.microsoft.com/en-us/library/dd639976(v=ws.10).aspx
And another:
http://support.microsoft.com/kb/2958414/
OAC TechnologyProfessional Nerds

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Commented:
Hi, I've looked at those posts and they didn't help me out much.

Here is the full event log error:

Log Name:      DFS Replication
Source:        DFSR
Date:          12/16/2014 12:46:40 AM
Event ID:      6002
Task Category: None
Level:         Error
Keywords:      Classic
User:          N/A
Computer:      SVR01.domain.local
Description:
The DFS Replication service detected invalid msDFSR-Subscriber object data while polling for configuration information.
 
Additional Information:
Object DN: CN=Domain System Volume,CN=DFSR-LocalSettings,CN=SVR01,OU=Domain Controllers,DC=DOMAIN,DC=local
Attribute Name: msDFSR-MemberReference
Domain Controller: SVR01.domain.local
Polling Cycle: 60 minutes


When I check out ADSI and go to the Domain System Volume folder for SVR01 and go to properties on the the msDFSR-Subscription entry there, I am missing the msDFSR-MemberReference field. I do not see this on either DC.
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