LocalClockDispersion Entry

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2, Windows Server 2008 R2


Data type Range Default value





This setting, expressed in seconds, is applicable only when the Network Time Protocol (NTP) server is using the time of the local CMOS clock. The LocalClockDispersion value indicates the maximum error in seconds that is reported by the NTP server to clients that are requesting a time sample. The default value is 10 seconds.

Change Method

You can change this entry only by editing the registry.

Activation Method

To make changes to this entry effective, at the command line, type:

w32tm /config /update


  • This entry is used when the local clock acts as a source of time for other computers, but is not synchronized with another network source. When the clock is synchronized from a network source, the dispersion is calculated relative to the source from which it synchronizes.