Time Skew Monitor Monitor

Operational States

Name State Description
Time Skew OK Success  
Time Skew Error Warning  

Overridable Parameters

Parameter Name Default Value Description Override
Frequency 300 How often the monitor is run
Timeout 300 Time out in seconds
Error threshold in seconds 120  
Iterations 3 How many times the monitor is run before initiating an error
Target server for the time comparison $Target/Property[Type="AD!Microsoft.Windows.Server.AD.Library.DomainControllerRole"]/PDCEmulator$  

Alert Details

Monitor State Message Priority Severity Auto Resolution
Time Skew Error (Warning) The Time Skew monitor has failed. Medium Warning Yes

Run As Profiles

Name
Default

Monitor Knowledgebase

Summary

AD Time Skew Monitor. This monitor generates an alert when the time difference between the local domain controller and a target domain controller exceeds a specified threshold.

This means that two domain controller disagree about the current time. If the time skew grows too large, Kerberos authentication can be affected.
Causes

Possible causes include the following:

  • PDC not configured to use external time source

  • Multiple DCs configured to use different external time sources
Resolutions

Verify each DC is syncing from either the PDC or a Gtime server. Verify that which ever DC all other DCs are syncing time from is set to use an external time source.

You can use the command line tool w32tm.exe to configure time on the DCs. See external resources below.

External References

For more information, see:

See Also for Active Directory (AD) Monitoring Management Pack


Downloads for Active Directory (AD) Monitoring Management Pack

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