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Event ID: 1014 Source: NTDSKCC

The replication topology update task terminated abnormally with code <error code>.
See the link to "EventID 1014 from source Active Directory" for information about this event.
If these errors occur during a domain controller demotion, you can ignore them. Just like promoting a server to DC gives some errors, demoting one gives errors too.
Happened when I was demoting one of two DC. Event 1568 also shown in directory service log. Follow ME250874 and ME269417 to manually create a site connection between the two DC and add the Administrator group to the local security policy (Enable computer and users accounts to be trusted for delegation). Retry dcpromo - worked for me this time.
Look at time on you Domain Controllers. They must be with the same hour and minute.

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