Registers the Windows Time service to run as a service and adds its default configuration information to the registry. Unregisters the Windows Time service and removes all of its configuration information from the registry. Monitors the Windows Time service. Converts a Windows NT system time measured in 10 -7 -second intervals starting from 0h 1-Jan into a readable format. Converts an NTP time measured in 2 -second intervals starting from 0h 1-Jan into a readable format. Tells a computer that it should resynchronize its clock as soon as possible, throwing out all accumulated error statistics.
Displays a strip chart of the offset between this computer and another computer. Displays the values associated with a given registry key. Displays the computer's Windows Time service information. Enables or disables the local computer Windows Time service private log. Controls whether this computer is marked as a reliable time server. A computer is not marked as reliable unless it is also marked as a time server. Not a time server 0x Always time server 0x Automatic time server 0x Always-reliable time server 0x Automatic reliable time server The default value for domain members is Controls whether or not the chaining mechanism is disabled.
If chaining is disabled set to 0 , a read-only domain controller RODC can synchronize with any domain controller, but hosts that do not have their passwords cached on the RODC will not be able to synchronize with the RODC. Specifies the maximum amount of time that an entry can remain in the chaining table before the entry is considered to be expired.
Expired entries may be removed when the next request or response is processed. The default value is 16 seconds. Controls the frequency at which an event that indicates the number of successful and unsuccessful chaining attempts is logged to the System log in Event Viewer.
The default is 30 minutes. Controls the maximum number of entries that are allowed in the chaining table. If the chaining table is full and no expired entries can be removed, any incoming requests are discarded. The default value is entries. Controls the maximum number of entries that are allowed in the chaining table for a particular host. The default value is 4 entries. Specifies the smallest local clock adjustments that may be logged to the W32time service event log on the target computer.
The default value is parts per million - PPM. Indicates the maximum number of seconds a system clock can nominally hold its accuracy without synchronizing with a time source. If this period of time passes without W32time obtaining new samples from any of its input providers, W32time initiates a rediscovery of time sources.
Default: 7, seconds. Controls which events that the time service logs. Time jump 0x2. Source change The default value on domain members is 2. The default value on stand-alone clients and servers is 2.
Controls the rate at which the clock is corrected. If this value is too small, the clock is unstable and overcorrects. If the value is too large, the clock takes a long time to synchronize.
The default value on domain members is 4. The default value on stand-alone clients and servers is 4. Controls the period of time for which spike detection is disabled in order to bring the local clock into synchronization quickly.
Specifies that a time offset greater than or equal to this value in 10 -7 seconds is considered a spike. Maintained by W32Time. Controls the dispersion in seconds that you must assume when the only time source is the built-in CMOS clock.
Specifies the maximum offset in seconds for which W32Time attempts to adjust the computer clock by using the clock rate. Specifies the largest negative time correction, in seconds, that the service makes.
Specifies the largest interval, in log2 seconds, allowed for the system polling interval. Specifies the largest positive time correction in seconds that the service makes. Specifies the smallest interval, in log base 2 seconds, allowed for the system polling interval. Controls the rate at which the phase error is corrected. Controls the decision to increase or decrease the poll interval for the system.
Controls whether or not the DC will respond to time sync requests that use older authentication protocols. Specifies the amount of time that a suspicious offset must persist before it is accepted as correct in seconds. An unsigned integer that indicates the time jump audit threshold, in seconds.
Specifies the number of clock ticks between phase correction adjustments. Value of 1 indicates that W32Time uses multiple SSL timestamps to seed a clock that is grossly inaccurate. Indicates that non-standard mode combinations are allowed in synchronization between peers. The default value for domain members is 1.
Specifies a space-delimited list of peers from which a computer obtains time stamps, consisting of one or more DNS names or IP addresses per line. Computers connected to a domain must synchronize with a more reliable time source, such as the official U. The following registry entries must be added in order to enable W32Time logging:. In order for W32Time to set the computer clock gradually, the offset must be less than the MaxAllowedPhaseOffset value and satisfy the following equation at the same time:.
SystemclockRate is the rate of the clock on the system. MaxAllowedPhaseOffset is also in seconds. The following two examples show how to apply. Example 1 : Time differs by 4 minutes For example, your time is AM and the time sample received from a peer and believed to be correct is AM. AND does it satisfy the above equation? Therefore W32tm would set the clock back immediately. In this case, if you want to set the clock back slowly, you would need to adjust the values of PhaseCorrectRate or updateInterval in the registry as well to ensure the equation results in TRUE.
Example 2 : Time differs by 3 minutes. In this case the clock will be set back slowly. This includes configuring a computer to be an NTPServer or NTPClient, configuring the time synchronization mechanism, and configuring a computer to be a reliable time source.
Configure Global Configuration Settings here. Some of the preset values that are configured in the System Administrative template file System. The following table lists the global Group Policy settings that are associated with the Windows Time service and the pre-set value associated with each setting.
For more information about each setting, see the corresponding registry entries in " Windows Time Service Registry Entries " earlier in this subject. Copy Try It. Note In this case, if you want to set the clock back slowly, you would need to adjust the values of PhaseCorrectRate or updateInterval in the registry as well to ensure the equation results in TRUE.
Warning Some of the preset values that are configured in the System Administrative template file System. My Followers. This entry indicates that non-standard mode combinations are allowed in synchronization between peers. The default value for domain members is 1. The default value for stand-alone clients and servers is 1. This entry specifies a space-delimited list of peers from which a computer obtains time stamps, consisting of one or more DNS names or IP addresses per line.
Computers connected to a domain must synchronize with a more reliable time source, such as the official U. The default value on stand-alone clients and servers is time. This entry is maintained by W32Time.
It contains reserved data that is used by the Windows operating system, and any changes to this setting can cause unpredictable results.
This entry Indicates which peers to accept synchronization from: NoSync. The time service does not synchronize with other sources. The time service synchronizes from the servers specified in the NtpServer. The time service synchronizes from the domain hierarchy. The time service uses all the available synchronization mechanisms. The default value on domain members is NT5DS.
The default value on stand-alone clients and servers is NTP. This entry controls whether this computer is marked as a reliable time server. Sign in to vote.
Our PDC is pointing to another time source than what is listed in this registry entry. Monday, February 23, PM. Hi, Based on my research, the value NT5DS means the time service synchronizes from the domain hierarchy, which is normal as the way I see it.
Tuesday, February 24, AM. Thank you. I found what I was looking for in the first link: NtpServer Establishes a space-delimited list of peers from which a computer obtains time stamps, consisting of one or more DNS names or IP addresses per line.
C-Nav Configuration. C-Nav Assd Files. System Tip This article applies to a different version of Windows than the one you are using. Content in this article may not be relevant to you. Visit the Windows 7 Solution Center. This article was previously published under Q Notice This article applies to Windows Support for Windows ends on July 13, The Windows End-of-Support Solution Center is a starting point for planning your migration strategy from Windows
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