In this guide, we are going to uncover some of the possible causes that might cause replication causing error 8451 and then provide possible solutions that you can try to get rid of this problem.
This article provides a solution to Active Directory replication error 8451: “The replication operation encountered a database error.”
Applies to: Windows Server 2019, Windows Server 2016, Windows Server 2012 R2
Original KB number: 2645996
This article describes the symptoms and causes of situations in which Active Directory Domain Services (AD DS) functions fail and error 8451: “Database error occurred during copy operation.” This article also offers a simple solution to this problem. .
You may experience one or more of the following noticeable symptoms:
You see one or more error messages, logged events, diagnostic messages, or products on the screen indicating a database error. Possible formats for this error are usually as follows.
Dcpromo.exe fails with error 8451.
The UI displays the correct message:
The operation failed for the following reason:
AD DS failed to replicate folder partition
A tracking error occurred while duplicating.
The Dcpromo.log file contains the following information
Repadmin.exe reports failed replication attempt with status 8451. Repadmin.exe commands that typically report full status 8451 include:
For details on using Repadmin to troubleshoot and resolve replication issues, see Tracking Active Directory replication troubleshooting with Repadmin.
NextThis example shows the output of someone’s
repadmin /showreps command showing badly replicated incoming traffic from CONTOSO-DC2 to CONTOSO-DC1 with the message “Replication access disabled, possibly denied.” ” is being generated.
Default first site nameCONTOSO-DC1
DSA Options: IS_GC
Site Options: (none)
DSA object GUID: b6dc8589-7e00-4a5d-b688-045aef63ec01
DSA Call ID: b6dc8589-7e00-4a5d-b688-045aef63ec01
==== INCOMING NEIGHBORS ==================================
Default first site nameCONTOSO-DC2 via RPC
DSA object GUID: try 74fbe06c-932c-46b5-831b-af9e31f496b2
The Event Viewer lists and may have other events associated with this error 8451. The following table lists the main event sources and event IDs associated with common events that indicate this error 8451 (in order event source + function ID ).source
[email protected],OU=marketing,OU=5thWard,OU=Houston,DC=Contoso,DC=com Objectguid: 2843919c-345c-4f57-bc1a-4ed5acbcf9e2 Original Web Site Controller : 173ee10f-4c28-4acd-a2d7-61af8d4d3010._msdcs.Contoso.com User Response If none of these steps are successful and the replication error persists, demote and resell this domain controller. Additional primary data error value: 8451 Database error during administrative replication. Secondary error value: -1075
[email protected],OU=marketing,OU=5thWard,OU=Houston,DC=Contoso,DC=com Topic GUID: 2843919c-345c-4f57-bc1a-4ed5acbcf9e2 source domain Controller: 173ee10f-4c28-4acd-a2d7-61af8d4d3010._msdcs.Contoso.com User Response If none of the individual actions are successful and replication continues to fail, you should demote and re-promote this gaming domain controller. Master Data Error Additional Value: 8451 Replication encountered a database error while running. Secondary error value: -1526
La Replicacion Genero Un Error 8451
De Replicatie Genereerde Een Fout 8451
Replikacja Wygenerowala Blad 8451
Replikeringen Genererade Ett Fel 8451
La Replica Ha Generato Un Errore 8451
La Replication A Genere Une Erreur 8451
Replikaciya Vydala Oshibku 8451
Die Replikation Erzeugte Einen Fehler 8451
복제에서 오류 8451이 생성되었습니다