The common causes of Event ID 1311 messages fall into two categories: Improper logical configuration and Infrastructure failure. These events are logged when an improper logical configuration or a replication error occurs. For more information see KB article 307593.
- Improper logical configuration.
A logical configuration is improperly configured when information in the Configuration Naming Context (NC) does not match the physical topology of the network that hosts the Active Directory forest. For example, a site may not be properly defined, sites that are missing from site links may be included, site links may not be interconnected, or incorrect bridgeheads may have been configured. - Infrastructure failure.
An infrastructure failure occurs as a result of one of more of the following events: - A wide area network (WAN) link fails.
- A domain controller that hosts a necessary naming context is offline.
- A replication failure occurs for one or more naming contexts.
For more information see KB article 307593.
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