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ERROR_LOGON_SERVER_CONFLICT
What this result means
ERROR_LOGON_SERVER_CONFLICT is a Windows system result. Netlogon detected conflicting information about the server providing logon or domain services. This often indicates identity, DNS, replication, or topology inconsistency rather than a user-password problem.
Why it can appear
- duplicate machine identities or restored domain-controller snapshots exist
- DNS records direct clients to an incorrect or stale server
- domain role or secure-channel metadata disagrees between machines
- replication has not converged after rename, restore, migration, or role changes
Troubleshooting steps
- Collect Netlogon, Directory Service, DNS, and System events from involved machines
- Verify machine SIDs, names, domain roles, secure channels, and replication status
- Inspect DNS SRV and host records for duplicates or stale addresses
- Correlate the first conflict with restore, cloning, promotion, demotion, or network changes
Correct recovery and handling
Correct duplicate identities and DNS, repair replication and secure channels using supported domain tools, and remove stale metadata. Avoid resetting multiple controllers blindly because that can make topology diagnosis harder.
Related and easily confused conditions
Authentication retries against the same inconsistent topology may produce different symptoms, including trust failures or unavailable logon servers.
References
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