Time synchronization on Vista through Internet?

Discussion in 'Windows Vista General Discussion' started by maruk2, May 14, 2007.

  1. maruk2

    maruk2 Guest

    My Vista (Home Premium) is configured to synchronize the time
    with time.windows.com server. However, it is done only on Sat
    at 9pm. There seems to be no way to change the automatic
    schedule. There is a button to sync it *manually* on demand.

    Does it mean that all Vista installations sync *automatically*
    exactly at the same moment?

    Is the sync operation precise? I checked last Sat and it was
    precise. But as far as I know the protocol used is rather
    primitive and does not take into account network delays,
    i.e. even though the server sends precise time the
    receiving PC does not know how much time the update
    packet spent in the network before it reached the PC.
    maruk2, May 14, 2007
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  2. I found this reply I wrote on 10/28/2001. It is still applicable to, and
    works just fine with Vista. I have added what may help for Vista:

    "Windows XP, as loaded, automatically updates the system time every 7 days
    from one of two time (more choices available in Vista) servers. This
    interval can be changed as follows:

    Go to Start. Type regedit in the search box.

    Highlight regedit in the top pane and open the program.

    Using regedit, search (press ctrl/F) for "specialpollinterval" without the

    Double click on the key in the right screen.

    Click on decimal.

    You will see that the decimal value is 604800, the number of seconds in 7

    Highlight the number to edit this decimal value to any value you desire,
    remembering that there are 86400 seconds in one day, 3600 seconds in an

    Click OK

    Press F3 to find the next instance of the same key

    Do the above for each instance of the value "specialpollinterval".

    When you get to the end of the registry, close the regedit window.

    Reboot system.

    You have now changed the polling interval of when your computer will update
    it's internal clock with that of the internet time server.




    Richard Urban
    Microsoft MVP Windows Shell/User
    (For email, remove the obvious from my address)

    Quote from George Ankner:
    If you knew as much as you think you know,
    You would realize that you don't know what you thought you knew!
    Richard Urban, May 14, 2007
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  3. Synapse Syndrome, Sep 4, 2007
  4. maruk2

    Johnny Guest

    Johnny, Oct 3, 2007
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