Windows 10: Windows clock consistently stays 12 minutes behind


  1. Posts : 1
    Windows 10 pro
       1 Week Ago #1

    Windows clock consistently stays 12 minutes behind


    Since purchasing my new PC, the clock stays consistently 10-12 minutes behind. When I set it to current time, it lasts for a day, then reverts back to 10 minutes behind. Is there a fix for this? Is this a Windows 10 issue, or desktop manufacturer issue?
      My ComputerSystem Spec

  2.    1 Week Ago #2

    Check the BIOS and make sure that is set to the correct time.
      My ComputerSystem Spec


  3. Posts : 32,289
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       1 Week Ago #3

    DeaconFrost is most likely correct, seeing it is a brand new machine, but if that is not the case, set your Time Server Sync to use time.nist.gov, not time.windows.com. The windows time server is notorious for getting finicky.

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      My ComputersSystem Spec

  4.    1 Week Ago #4

    Check the System log in Event Viewer. Filter on source Time-Service. You should see event IDs 37 and 35. Event ID 37 will show you when the service receives a time update (and from which time source... time.windows.com by default), immediately followed by event ID 35 which shows the time being synchronised. There should only be a delay of microseconds between the 2 events (e.g. received at 02:33:38 and synced at 02:33:56).

    Event ID 35 also shows the stratum number, i.e. the distance from the time source (in terms of 'router hops', not miles.) In terms of accuracy, a 'stratum-0' service is the most accurate, i.e. an atomic clock reference source. Windows, by default, includes 2 lower stratum sources, time.windows.com and time.nist.gov. These can be seen in the registry at:
    Code:
    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\DateTime\Servers
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    (There is nothing to prevent you adding more time sources (as REG_SZ) to the list or replacing the 2 defaults.)

    By comparison, the system clock (i.e. in the BIOS) is considered a 'stratum-12' service to show that it's not really considered accurate at all, hence the need to continually update it.

    Hope this helps...
      My ComputerSystem Spec


 

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