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ERROR_DS_DRA_OUT_OF_MEM
ERROR_DS_DRA_OUT_OF_MEM (8446) is an Active Directory replication error. The domain controller did not have sufficient available memory for the replication operation at that moment. The proper response is capacity and workload analysis, not changing replication metadata.
What to check
- Check committed memory, paging activity, and process-level consumption on the affected domain controller during the replication window.
- Compare queue growth and replication backlog with memory pressure to determine whether this is a one-off spike or sustained overload.
- Review recent changes that increased directory size, replication fan-out, or concurrent administrative tasks.
Useful command
repadmin /queue <DestinationDC>Microsoft: Repadmin /queue · Microsoft: Troubleshoot slow AD replication · Microsoft: Diagnose AD replication failures
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