Event ID 13 — Domain Hierarchy Time Source Acquisition

Updated: November 25, 2009

Applies To: Windows Server 2008 R2

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An Active Directory forest has a predetermined time synchronization hierarchy. The Windows Time service (W32time) synchronizes time between computers within the hierarchy, with the most accurate reference clocks at the top. If more than one time source is configured on a computer, the Windows Time service uses Network Time Protocol (NTP) algorithms to select the best time source from the configured sources, based on the computer’s ability to synchronize with that time source. Currently, the Windows Time service is synchronizing time with a time source peer from the domain heirarchy.

Event Details

Product: Windows Operating System
ID: 13
Source: Microsoft-Windows-Time-Service
Version: 6.0
Symbolic Name: MSG_NT4_DOMAIN
Message: Time Provider NtpClient: This machine is configured to use the domain hierarchy to determine its time source, but the computer is joined to a Windows NT 4.0 domain. Windows NT 4.0 domain controllers do not have a time service and do not support domain hierarchy as a time source. NtpClient will attempt to use an alternate configured external time source if available. If an external time source is not configured or used for this computer, you may choose to disable the NtpClient.

Resolve

Configure a manual peer, or join the computer to a Windows 2000, Windows Server 2003, or Windows Server 2008 domain (NT5DS)

The computer running the Windows Time service client is configured as a member of a Windows NT 4.0 domain. This computer should be joined to a domain running Active Directory or Active Directory Domain Services (AD DS), or it should configured to use a manual time source peer. Perform the following procedures on the computer that is logging the event to be resolved.

To perform these procedures, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To join a new domain:

  1. Open a command prompt as an administrator. To open a command prompt as an administrator, click Start. In Start Search, type Command Prompt. At the top of the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
  2. At the command prompt, type sysdm.cpl, and then press ENTER. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue. The System Properties dialog box opens.
  3. On the Computer Name tab, click Change. The Computer Name/Domain Changes dialog box opens.
  4. Under Member of, ensure that Domain is selected. Type the name of the domain in the box.
  5. When you are prompted, type your domainname\username and password to join the computer to the domain, where domainname is the name of the domain where your user account exists.
  6. When the domain is found, the membership is confirmed. Click OK.
  7. Restart the computer when you are prompted.

To configure a manual time source peer:

  1. Open a command prompt as an administrator. To open a command prompt as an administrator, click Start. In Start Search, type Command Prompt. At the top of the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
  2. At the command prompt, type w32tm /config /manualpeerlist:server,0x8, /syncfromflags:manual /update, where server is the name of the time source that you want to configure, and then press ENTER.

To learn more about the Windows Time service and related tools, see Windows Time Service Tools and Settings (http://go.microsoft.com/fwlink/?LinkID=42984).

Verify

To perform this procedure, you must have membership in Administrators, or you must have been delegated the appropriate authority.

To verify that the Windows Time service is synchronizing correctly:

  1. Open a command prompt as an administrator. To open a command prompt as an administrator, click Start. In Start Search, type Command Prompt. At the top of the Start menu, right-click Command Prompt, and then click Run as administrator. If the User Account Control dialog box appears, confirm that the action it displays is what you want, and then click Continue.
  2. At the command prompt, type W32TM /resync, and then press ENTER.
  3. At the command prompt, type W32TM /query /status, and then press ENTER.

    This command displays the status of the Windows Time service synchronization. The Last Successful Sync Time line of the output displays the date and time that you ran the W32TM /resync command in the previous step. Also, check the computer name that is shown as the Source. This should be the name of a domain controller (or an administrator-configured time server) in the same Active Directory domain as the local computer.

To verify that the Windows Time service synchronized successfully with its time source, confirm that Event IDs 35 and 37 appear in Event Viewer. If there was a recovery from a previous failure to synchronize with the time source, you also see Event ID 138, which indicates that the Windows Time service is synchronized correctly.

For more information about the Windows Time service, see the Windows Time Service Technical Reference (http://go.microsoft.com/fwlink/?LinkID=25393).

Related Management Information

Domain Hierarchy Time Source Acquisition

Active Directory

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