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How to synchronize the time on a Windows 2000-based computer in a Windows NT 4.0 domain

This article was previously published under Q258059
Notice
This article applies to Windows 2000. Support for Windows 2000 ends on July 13, 2010. The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000. For more information see the Microsoft Support Lifecycle Policy.
For a Microsoft Windows XP version of this article, see 314345.
Notice
This article applies to Windows 2000. Support for Windows 2000 ends on July 13, 2010. The Windows 2000 End-of-Support Solution Center is a starting point for planning your migration strategy from Windows 2000. For more information see the Microsoft Support Lifecycle Policy.
SYMPTOMS
A Microsoft Windows 2000-based computer that is a member of a Microsoft Windows NT 4.0-based domain may have the following event in the System event log:
Source: W32Time
Type: Warning
Event ID: 64
Description: Because of repeated network problems, the time service has not been able to find a domain controller to synchronize with for a long time. To reduce network traffic, the time service will wait 960 minutes before trying again. No synchronization will take place during this interval, even if network connectivity is restored. Accumulated time errors may cause certain network operations to fail. To tell the time service that network connectivity has been restored and that it should resynchronize, execute "w32tm /s" from the command line.
Additionally, if you stop the Windows Time service (W32Time.exe) and run the w32time -v -once command at the command prompt, you may receive the following error message:
BEGIN:FDoTimeNTPTypeW32Time:       BEGIN:ChooseNTPServerW32Time:       END  Line 2178W32Time:       BEGIN:GetSocketForSynchW32Time:          NTP: ntpptrs[0] - DOL-RSRC-BDC2W32Time:          rgbNTPServer DOL-RSRC-BDC2W32Time:          Port Pinging to - 123W32Time:          Connecting to "DOL-RSRC-BDC2" (198.7.83.42)W32Time:       END:Line 1170W32Time:       BEGIN:GetDefaultRidW32Time:       END  Line 2359W32Time:       BEGIN:ComputeDelayW32Time:          BEGIN:NTPTry -- initW32Time:          END  Line 1683W32Time:          BEGIN:NTPTry -- tryW32Time:             BEGIN:ComputeIntervalW32Time:             END  Line 2479W32Time:             Sending to server  48 bytes...W32Time:             NTP: recv failed (SOCKET_ERROR)! - 10054W32Time:             Logging event 0x8000000B. 15 min until this event is allowed again.W32Time:             0x8000000B reported to System Log in Event ViewerW32Time:             NTP: didn't receive datagramW32Time:             Rejecting logging event 0x8000000B. 894 sec until this event is allowed.W32Time:          END  Line 1951W32Time:          Time source failed to produce usable timestamp.
CAUSE
Windows uses the Windows Time time synchronization service (W32Time) to synchronize the date and time on computers in a Windows 2000-based network. A Windows 2000-based computer attempts to synchronize its time with a Windows 2000-based domain controller. If the computer is unable to find a Windows 2000-based domain controller in the domain, it is unable to synchronize the time.
RESOLUTION
If you have an existing time synchronization hierarchy in your Windows NT 4.0-based domain using W32Time and you want to have the Windows 2000-based computers participate:
  1. On a Windows NT 4.0-based domain controller that is running W32Time, edit the %SystemRoot%\W32time.ini file and set the "LocalNTP=yes" value.
  2. On the same domain controller, at the command prompt, type the following commands, and then press ENTER after each command:
    net stop w32time
    w32time -update
    net start w32time
  3. On the Windows 2000-based computer, at a command prompt, type net time /setsntp:domain controller.Where domain controller is the domain controller you modified in steps 1 and 2.
Note If you are using Timeserv on the Windows NT 4.0-based domain, you must upgrade to W32Time before using this procedure. Timeserv does not support being a Local NTP server.
MORE INFORMATION
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows


Caution Running the net time /setsntp:domain controller command on the Windows 2000-based computer modifies the default parameters for W32Time in the registry. Because time synchronization is critical in a Windows 2000-based domain, set the operation of W32Time back to the default before the Windows 2000-based computer becomes a member of a Windows 2000-based domain.

To set the operation of W32Time back to the default, delete the "ntpserver" value and change the "type" value from "ntp" to "nt5DS". The values are located under the following registry location:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\W32Time\Parameters
For more information Windows Time service, click the following article number to view the article in the Microsoft Knowledge Base:
246145 Changes to the W32Time and TimeServ utilities
224799 Basic operation of the Windows Time Service
223184 Registry entries for the W32Time service
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Article ID: 258059 - Last Review: 10/31/2006 03:05:29 - Revision: 4.4

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition
  • kbenv kbprb kbtimeserv KB258059
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