Event ID: 5511 - Mismatched SIDs (169145)
The information in this article applies to:
- Microsoft Windows NT Server 3.5
- Microsoft Windows NT Server 3.51
- Microsoft Windows NT Server 4.0
This article was previously published under Q169145 SYMPTOMS
Domain synchronization may fail with the following error:
Source: NETLOGON
Event ID: 5511
The servers <DOMAINCONTROLLER1> and <DOMAINCONTROLLER2> both claim to be
an NT Domain Controller for the <DOMAIN> domain. One of the servers
should be removed from the domain because the servers have different
security identifiers (SID).
CAUSE
The easiest way for this error to occur is to install a domain controller
while either it or the other domain controller is disconnected from the
network or off-line. This will create a domain with the same name but it
will have a different security identifier (SID). As far as Windows NT
domains, machine accounts, and trusts are concerned, you have created a new
domain.
RESOLUTION
The problem domain controller must be re-installed when it can connect to
the primary domain controller.
| Modification Type: | Major | Last Reviewed: | 5/14/2003 |
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| Keywords: | kbprb KB169145 |
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