Event Messages That Indicate Active Directory Replication Problems (DC간 복제 문제)

간혹 DC간 Replication의 문제가 발생할 경우가 있습니다.
해결 하기 막막한 분들을 위해서 각 Event ID 별 원인 및 해결 책을 공유해 드립니다.

Event ID and source	Root cause	Solution
1311 — NTDS KCC	The replication configuration information in Active Directory does not accurately reflect the physical topology of the network.	Fixing Replication Topology Problems (Event ID 1311)
1388 — NTDS Replication	Strict replication consistency is not in effect, and a lingering object has been replicated to the domain controller.	Fixing Replication Lingering Object Problems (Event IDs 1388, 1988, 2042)
1925 — NTDS KCC	The attempt to establish a replication link for a writable directory partition failed. This event can have different causes, depending on the error.	Fixing Replication Connectivity Problems (Event ID 1925) Fixing Replication DNS Lookup Problems (Event IDs 1925, 2087, 2088)
1988 — NTDS Replication	The local domain controller has attempted to replicate an object from a source domain controller that is not present on the local domain controller because it may have been deleted and already garbage-collected. Replication will not proceed for this directory partition with this partner until the situation is resolved.	Fixing Replication Lingering Object Problems (Event IDs 1388, 1988, 2042)
2042 — NTDS Replication	Replication has not occurred with this partner for a tombstone lifetime, and replication cannot proceed.	Fixing Replication Lingering Object Problems (Event IDs 1388, 1988, 2042)
2087 — NTDS Replication	Active Directory could not resolve the DNS host name of the source domain controller to an Internet Protocol (IP) address, and replication failed.	Fixing Replication DNS Lookup Problems (Event IDs 1925, 2087, 2088)
2088 — NTDS Replication	Active Directory could not resolve the DNS host name of the source domain controller to an IP address, but replication succeeded.	Fixing Replication DNS Lookup Problems (Event IDs 1925, 2087, 2088)
2095 — NTDS Replication	Update sequence number (USN) rollback has occurred and replication has been stopped. This error indicates an improper Active Directory restore, possibly of a virtual machine file (.vhd).	For an explanation of this problem and recommendations for solutions, see Running Domain Controllers in Virtual Server 2005 on the Microsoft Web site (http://go.microsoft.com/fwlink/?LinkId=38330).
5805 — Net Logon	A machine account failed to authenticate, which is usually caused by either multiple instances of the same computer name or the computer name not replicating to every domain controller.	Fixing Replication Security Problems