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rmartin0000 avatar image
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rmartin0000 asked DSPatrick answered

Error while migrating FSR to DFSR in 2016 server

Hi Experts,
We've 2 DC's running on server 2016 and both ADC's are writable domains with forest level 2008R2, ADC1 is holding FSMO roles whereas 2nd ADC is backup.

While migrating FRS to DFSR from ADC1 stuck in Eliminate stage where it stuck since more than 24 hrs but still not complete while troubleshooting found event viewer 1302, 4614, 2107 & 6804.

Pls. note, I'm running with domain admin account and both DC's has enough space available and I can see SYSVOL_DFSR windows dir in both domains but size wise not fully replicated.

Pls. find attached 76855-dfsrmig-040.log[76867-event-viewer-error-1302.txt][2][76848-event-viewer-error-4614.txt][3]EV error report, DFS debug report and snapshots and kindly advice with your suggestion.

thank you![76893-1.jpg][5]


![76911-2.jpg][4]


windows-server-migrationwindows-server-management
1.jpg (40.6 KiB)
2.jpg (36.2 KiB)
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rmartin0000 avatar image
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rmartin0000 answered

result same as before, no sysc b/w the DC's (2016).

Could you pls. advice how to revert back DFSR stage to 0 so to start from beginning, i tried executing "dfsrmig /setglobalstate 0" but came up with error "Current dfsr stage : Eliminated" Any other alternative solution to overcome this issue?

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DSPatrick avatar image
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DSPatrick answered

Could you pls. advice how to revert back DFSR stage to 0 so to start from beginning, i tried executing "dfsrmig /setglobalstate 0" but came up with error "Current dfsr stage : Eliminated"

Once it reaches eliminated state there's no turning back. I'd try moving roles off then demote the problematic one and check result.






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rmartin0000 avatar image
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rmartin0000 answered

Thank you DSPatrick,

I've scheduled this activity for this weekend after completion of this will update accordingly.

One Question, after demoting the DC, can I use the same hostname & IP?

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DSPatrick avatar image
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DSPatrick answered

After demotion I'd confirm the problems are sorted and health is 100% before doing anything. If you were rebuilding it yes you can reuse assuming demotion was clean and successful. If not you can perform clean up to remove remnants.
https://docs.microsoft.com/en-us/windows-server/identity/ad-ds/deploy/ad-ds-metadata-cleanup
https://techcommunity.microsoft.com/t5/itops-talk-blog/step-by-step-manually-removing-a-domain-controller-server/ba-p/280564


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