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Thread: Setting Up SBS to Sync w/ External Time Source

  1. #1
    Join Date
    Feb 2006
    Posts
    99

    Setting Up SBS to Sync w/ External Time Source

    After some research I usd the below setup time synchronization between my XP Pro SP2 client computers and my SBS 2003 server. The server is syncing with an external time source and the commands that I run on the server can be checked below:

    w32tm /config /manualpeerlist:time.nist.gov,0x8 /syncfromflags:MANUAL
    net stop w32time
    net start w32time
    w32tm /resync

    Below is the commands that I am running on the clients:
    net time /setsntp:<MY_SERVER>
    w32tm /resync /nowait

    They were working fine but from last couple of days I was getting the below event in the SBS 2003 System Event log:

    Type: Error
    Source: W32Time
    Event ID: 46
    Description: The time service encountered an error and was forced to shutdown. The error was: 0xC0020018

    Type: Information
    Source: W32Time
    Event ID: 38
    Description: The time provider NtpClient cannot reach or is currently
    receiving invalid time data from <MY_SERVER>
    (ntp.m|0x0|10.0.0.3:123->10.0.0.3:123).

    Type: Warning
    Source: W32Time
    Event ID: 47
    Description: Time Provider NtpClient: No valid response has been received from manually configured peer <MY_SERVER> after 8 attempts to contact it. This peer will be discarded as a time source and NtpClient will attempt to discover a new peer with this DNS name.

    Type: Error
    Source: W32Time
    Event ID: 29
    Description: The time provider NtpClient is configured to acquire time from one or more time sources, however none of the sources are currently accessible. No attempt to contact a source will be made for XX minutes. NtpClient has no source of accurate time.

    Any ideas how to solve this problem? Thanks

  2. #2
    Join Date
    Aug 2006
    Posts
    201

    Re: Setting Up SBS to Sync w/ External Time Source

    Are you by any chance using ISA? If yes then you should try to make sure the NNTP port is setup for TCP not UDP.

  3. #3
    Join Date
    Feb 2006
    Posts
    99

    Re: Setting Up SBS to Sync w/ External Time Source

    Thanks for the reply, and no I am not using ISA. We are simply using an external piece of hardware.

  4. #4
    Join Date
    Oct 2005
    Posts
    2,358
    You can follow a rich source of w32time information that can be found in the below link:

    http://blogs.msdn.com/b/w32time/

    After reviewing you might want to enable debug for more detailed information.

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