Event ID 13508 on DC

I am not that good with AD and dont want to mess anything and hope can get some resolution today as tomorrow users will be back and dont want any issues than
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Sarang TinguriaConnect With a Mentor Sr EngineerCommented:
first check that you have proper Connection objects has been created in Sites and Services

Browse \\WorkingDC.domain.local copy sysvol & netlogon and keep backup on ProblemDC &  WorkingDC (If can not browse check network connectivity/Port and don't proceed further)

Go to WorkingDC  stop NTFRS service open regedit and go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Backup/Restore\Process at Startup" change the burflag value to D4 Start NTFRS(File Replication service) service and wait for File Replication event ID 13516 now Go to ProblemDC  stop NTFRS service open regedit go to "HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\NtFrs\Parameters\Backup/Restore\Process at <samp>Startup" change the burflag value to D2 -> Start NTFRS(File Replication service) service and wait for File Replication event ID 13516 now

Check Now your sysvol and netlogon shares are available

Above is called Authoritive(D4) and non-Authoritive Restore (D2)

Refer http://support.microsoft.com/kb/257338 for more info
Manpreet SIngh KhatraConnect With a Mentor Solutions Architect, Project LeadCommented:
Procedures for Troubleshooting FRS Event 13508

Run the below commands and check for any errors
Dcdiag /q, Netdiag /q
Check if the Time sync is in place
Firstly check if below Registry is in place on the server that shows errors

In my case these changes didn't resolve the problem:
1. Stop FRS.
2. Start Registry Editor (Regedt32.exe).
3. Locate and click the following key in the registry:
4. On the Edit menu, click Add Value, and then add the following registry value:
   Value name: Enable Journal Wrap Automatic Restore
   Data type: REG_DWORD
   Radix: Hexadecimal
   Value data: 1 (Default 0)
5. Locate and click the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\NtFrs\Parameters\Backup/Restore/Process at Startup
6. On the Edit menu, click Add Value, and then add the following registry value:
   Value name: BurFlags
   Data type: REG_DWORD
   Radix: Hexadecimal
   Value data: D2
7. Quit Registry Editor.
8. Start FRS service

   net time \\ComputerName_Of_Authoritative_Time_Server /set /y
   net stop ntfrs
   net start ntfrs

- Rancy
"Merry Christmas and Happy New Year"
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S_K_SAuthor Commented:
TG-TIS can you tell me what specific steps your refering to as few are listed in the post from Rancy and not sure if there you are wanting to check something rather than working on entire post

Tony GiangrecoCommented:
The steps I'm referring too appear to be idetical to the steps Rancy quoted. It appears someone copied them to the Microsoft sire (or vise versa) a while back.
S_K_SAuthor Commented:
No worries is there something you can suggest that i can check ? Would like to take all options and work on them in one time

SandeshdubeyConnect With a Mentor Senior Server EngineerCommented:
There are multiple reasons for event id 13508 to occur it could be due network latency issue.Ad sites and services are not set corectly,replication issue,dns misconfig,required port not open for AD replication,secure channel broken,etc.

I would recommend to first check the health of dc by running dcdiag /q and repadmin /replsum and post the log if error is reported along with ipconfig /all details of DC's.

I would suggest contact network/security team to verify whether all the related AD ports being configured and allowed on the firewall for communication. Portquery is free tool from the MS which can be downloaded and installed to verify the necessary ports are opened or not.
Also, disable local windows firewall service, by default it is enabled in vista/windows 2008 and above. Check the network connectivity and latency.
 Disable Windows Firewall:http://technet.microsoft.com/en-us/library/cc766337(WS.10).aspx

Active Directory and Active Directory Domain Services Port Requirements

Best practices for DNS client settings on DC and domain members.

If manual connection are created in AD sites and service then remove the same and run repadmin /kcc to regerate the topology:

See this similar thread too:

Hope this helps
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