4932 Security log · DS Access info severity medium volume

Windows Event ID 4932 — Synchronization of a replica of an Active Directory naming context has begun

AD replication started. Normal replication activity.

Why event 4932 matters

High volume of rapid replication events may indicate DCSync-like activity generating replication traffic.

How to detect it

No standalone alerting. Monitor for anomalous replication patterns.

Log source
Security
Advanced Audit Policy — enable the 'DS Access' subcategory (Success and/or Failure).
Fields to pivot on
SubjectUserNameTargetUserNameLogonTypeIpAddressWorkstationName

Detection queries

Starting points — adapt the log source, projected fields and thresholds for your environment.

Sentinel / Defender KQL
SecurityEvent
| where EventID == 4932   // Synchronization of a replica of an Active Directory naming context has begun
| project TimeGenerated, Computer, SubjectUserName, TargetUserName, LogonType, IpAddress, WorkstationName
| sort by TimeGenerated desc
Splunk SPL
index=* sourcetype="WinEventLog:Security" EventCode=4932
| stats count earliest(_time) as first_seen latest(_time) as last_seen by ComputerName
| sort - count   `# Synchronization of a replica of an Active Directory naming context has begun — add EventData fields: SubjectUserName, TargetUserName, LogonType, IpAddress`
Hunt event 4932 in Sentinel/Defender →
Build a KQL query for this event in the KQL Query Builder.
Search all event IDs →
Open the interactive Windows Event ID lookup.

Related DS Access events

4662 An operation was performed on an object 4928 An Active Directory replica source naming context was established 4929 An Active Directory replica source naming context was removed 4930 An Active Directory replica source naming context was modified 4933 Synchronization of a replica of an Active Directory naming context has ended 4934 Attributes of an Active Directory object were replicated 4935 Replication failure begins 4936 Replication failure ends 4937 A lingering object was removed from the replica 5136 A directory service object was modified 5137 A directory service object was created 5138 A directory service object was undeleted

Frequently asked questions

What is Windows Event ID 4932?

Synchronization of a replica of an Active Directory naming context has begun. AD replication started. Normal replication activity.

Which log records event 4932?

Event 4932 is written to the Security channel by Microsoft-Windows-Security-Auditing. Advanced Audit Policy — enable the 'DS Access' subcategory (Success and/or Failure).

How do you detect activity around event 4932?

No standalone alerting. Monitor for anomalous replication patterns.