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My time settings is more than 1 minute compare to world clock? Plz help

    Question

  • Hi Team,

    In my windows domain environment, i have configured the NTP server PDCe and pointed to time.windows.com,0x1 and every thing was going fine.

    And i observed recently, my time is ahead 1 minute compare to world clock. Please suggest what is the issue here.

    Thanks, Dev

    Tuesday, June 12, 2012 1:00 PM

Answers

  • Hi Guyz.. thanks for the posts.

    My issue got resolved and my time is exactly sync with World clock,

    The issue with NTP server address and same has been changed with IP and port binding. Thanks all for the help.

    , Dev

    Monday, June 18, 2012 12:09 PM

All replies

  • Hello,

    windows time service is not made high available details in http://blogs.technet.com/b/askds/archive/2007/10/23/high-accuracy-w32time-requirements.aspx and check also http://msmvps.com/blogs/mweber/archive/2010/06/27/time-configuration-in-a-windows-domain.aspx


    Best regards

    Meinolf Weber
    MVP, MCP, MCTS
    Microsoft MVP - Directory Services
    My Blog: http://msmvps.com/blogs/mweber/

    Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.


    Tuesday, June 12, 2012 1:17 PM
  • Thanks for the post meinolf,

    But, in my domain i am seeing 1 min 22 sec ahead compare to world clock time ( that is the huge difference). 

    currently, my PDC is sync  with time.windows.com, i just want to confirm whether time.windows.com is more than one minute compare to world clock or its a problem with my PDC and external time source. Please clarify.   Thanks, Dev

    Tuesday, June 12, 2012 1:32 PM
  • As Meinolf suggested, windows time (w32time)service is not designed for high accuracy, but more to avoid domain authentication failure using Kerberos protocl due to computer being 5 min. behind of the DC. Make sure all the domain joined systems are running with latest service pack & patches along with the hardware update. If these are into place, you shouldn't be worrying much.Take a look at the windows time service reference article.

    http://technet.microsoft.com/en-us/library/cc773061%28v=ws.10%29.aspx


    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.

    Tuesday, June 12, 2012 1:35 PM
  • Hello,

    windows time service is not made high available details in http://blogs.technet.com/b/askds/archive/2007/10/23/high-accuracy-w32time-requirements.aspxand check also http://msmvps.com/blogs/mweber/archive/2010/06/27/time-configuration-in-a-windows-domain.aspx


    Best regards

    Meinolf Weber
    MVP, MCP, MCTS
    Microsoft MVP - Directory Services
    My Blog: http://msmvps.com/blogs/mweber/

    Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.

    Meinolf, i request you to correct the blogs.technet.com link which have add after .aspx extension & due to this its not working. I myself can edit your link being a moderator...:)


    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.


    Tuesday, June 12, 2012 1:39 PM
  • Hello,

    windows time service is not made high available details in http://blogs.technet.com/b/askds/archive/2007/10/23/high-accuracy-w32time-requirements.aspx and check also http://msmvps.com/blogs/mweber/archive/2010/06/27/time-configuration-in-a-windows-domain.aspx


    Best regards

    Meinolf Weber
    MVP, MCP, MCTS
    Microsoft MVP - Directory Services
    My Blog: http://msmvps.com/blogs/mweber/

    Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.

    Meinolf, i request you to correct the blogs.technet.com link which have add after .aspx extension & due to this its not working. I myself can edit your link being a moderator...:)


    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.


    Hi Awinish,

    uuppssss, changed :-)


    Best regards

    Meinolf Weber
    MVP, MCP, MCTS
    Microsoft MVP - Directory Services
    My Blog: http://msmvps.com/blogs/mweber/

    Disclaimer: This posting is provided AS IS with no warranties or guarantees and confers no rights.

    Tuesday, June 12, 2012 1:48 PM
  • Thank you.


    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.

    Tuesday, June 12, 2012 1:51 PM
  • Hi All,

    Thanks for the update,

    In my domain all client machine and member servers are getting time from my  PDCe and this sync was proper without any issues.

    But, when i suddenly compared my time with world clock i found that its more than 1 min ahead. 

    i understand that, windows time (w32time)service is not designed for high accuracy but, more than 1 min ahead is high value difference i feel.

    but, in other environment i have configured the same setup with external time source of time.windows.com and its matching fine with world clock.

    sorry for asking again and again the repeated one :)

    Regards, Dev

    Tuesday, June 12, 2012 1:54 PM
  • What are the Oses involved int he domain facing this issue & have you deployed all the latest fixes/service pack/patches as well as hardware updates to the system facing such issue. If you manually change time on one of the problem system, does it go back by 2 min or remains?Also, is PDC is virtual or physical DC?

    I presume, you are not using any GPO or scripts or any tool to configure or sync time apart from the default way of time sync of PDC and clients to PDC.

    You can use w32tm /stripchart or enable time debug logging for advanced level troubleshooting.

    http://blogs.msdn.com/b/w32time/archive/2008/02/28/configuring-the-time-service-enabling-the-debug-log.aspx

    The last resort can be, test for one of the machine by un-registering the time service & re-registering it to see if there is any improvement.

    Windows Time Server Role in AD Forest/Domain  http://awinish.wordpress.com/2011/10/07/time-server-role-in-forestdomain/


    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.

    Tuesday, June 12, 2012 2:11 PM
  • Hi,

    OS - Windows 2003 domain environment (Clients xp and 7)

    Updated with Latest patches

    And i changed the timings in one of my member server by delaying 1 min and its remain same.

    Thanks, Dev 

    Tuesday, June 12, 2012 2:26 PM

  • "And i changed the timings in one of my member server by delaying 1 min and its remain same.'


    Sorry for the above statement, time settings is getting changed back again to old..
    Tuesday, June 12, 2012 3:14 PM
  • Hi,

    OS - Windows 2003 domain environment (Clients xp and 7)

    Updated with Latest patches

    And i changed the timings in one of my member server by delaying 1 min and its remain same.

    Thanks, Dev 

    I don't know why you're changing it manually. If you're seeing something under 3 minutes, that's actually fine, as long as the whole forest is under 5 minutes. If it doesn't sync up betwewen 2 and 3 minutes, then that's when you start worrying.

    As Awinish and Meinolf pointed out, the time service's only job is to ensure Kerb's 5 min skew tolerance is met. That's it. If you want down to the second sync, such as for financial transactions (SEC and Stock Market requirements comes to mind), then you must use a third party time service on all machines.

    .

    In addition to other links posted, here's some more info and specifics on W32Time's limitations:

    Configuring the Windows Time Service for Windows 2000, 2003, 2008 and newer, explanation of the time service hierarchy, and more
    Published by Ace Fekay, MCT, MVP DS on Sep 18, 2009 at 8:14 PM  3050  1 
    http://msmvps.com/blogs/acefekay/archive/2009/09/18/configuring-the-windows-time-service-for-windows-server.aspx

    .


    Ace Fekay
    MVP, MCT, MCITP EA, MCTS Windows 2008/R2, Exchange 2007 & Exchange 2010, Exchange 2010 EA, MCSE & MCSA 2003/2000, MCSA Messaging 2003
    Microsoft Certified Trainer
    Microsoft MVP - Directory Services
    Complete List of Technical Blogs: http://www.delawarecountycomputerconsulting.com/technicalblogs.php

    This post is provided AS-IS with no warranties or guarantees and confers no rights.

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    Tuesday, June 12, 2012 3:21 PM
  • "And i changed the timings in one of my member server by delaying 1 min and its remain same.'

    Sorry for the above statement, time settings is getting changed back again to old..

    Did you verify is there any script being configured or GPO, if its changing back again then i'm sure there is either GPO/script or schedule task been doing such.

    Use rsop.msc or gpresult /z to verify what is the exact GPO settings being applied.



    Awinish Vishwakarma - MVP - Directory Services

    My Blog: awinish.wordpress.com

    Disclaimer This posting is provided AS-IS with no warranties/guarantees and confers no rights.

    Tuesday, June 12, 2012 4:23 PM
  • Hi Guyz.. thanks for the posts.

    My issue got resolved and my time is exactly sync with World clock,

    The issue with NTP server address and same has been changed with IP and port binding. Thanks all for the help.

    , Dev

    Monday, June 18, 2012 12:09 PM