How to Change the Time Synchronization Interval in Windows

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Your computer's clock may be as many as a few seconds to a few minutes off the correct time. Therefore, Windows includes a time synchronization scheduler to synchronize your clock automatically, located on the Internet Time tab in the Date & Time Settings. The default interval for this process is one week (which is 604,800 seconds). There is no way to change this interval through the user interface, it has to be done using the registry editor (regedit).

  1. How.com.vn English: Step 1 Open Internet Time Synchronization.
    To do this, open Date and Time Settings. You can do this either through the Control Panel, or by clicking on the time on the taskbar, then clicking "Change date and time settings..." then clicking the "Internet Time" tab.
    • Verify the computer is set to synchronize automatically.
  2. How.com.vn English: Step 2 Open the Registry Editor.
    There are several ways of doing this, choose the most convenient for you. If you get a User Account Control dialog, click Yes.
    • Press the Windows logo key and R. This will open the Run dialog. Then type regedit and click OK.
    • Alternatively, open the Start Menu and type "regedit" in the search box. Click the regedit program to open.
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  3. How.com.vn English: Step 3 Navigate to HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\services\W32Time\TimeProviders\NtpClient.
    Just click the arrows next to the folder icons to navigate to the correct directories. You may have to scroll a bit when you reach the SYSTEM key.
  4. How.com.vn English: Step 4 Right click on the SpecialPollInterval key, then click Modify.
  5. How.com.vn English: Step 5 Convert your desired time to seconds.
    You can quickly do this using Google or a website like Easysurf.
  6. How.com.vn English: Step 6 Click Decimal.
    Then, enter your interval in seconds (without commas), and click OK.
  7. How.com.vn English: Step 7 Close the Registry Editor.
  8. How.com.vn English: Step 8 Open Date and Time Settings.
    Click Internet Time, click Change Settings, then Update Now. This will immediately synchronize your clock. Click OK to close the dialog.
  9. How.com.vn English: Step 9 Confirm your new synchronization interval works.
    If it does, the next synchronization time should be exactly one interval away from the time you synchronized.
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  • Question
    Will this cause an issue with my Internet access?
    How.com.vn English: Community Answer
    Community Answer
    No, it won't cause internet access issues.
  • Question
    What units are the value for the system variable that I change in in Windows?
    How.com.vn English: Community Answer
    Community Answer
    You may specify decimal (base 10, like our number system) or hexadecimal (base 16, used in the programming industry).
  • Question
    Purely for curiosity's sake, why not set it to less than 15 minutes?
    How.com.vn English: Arrogance
    Arrogance
    Top Answerer
    There's a possibility that Microsoft could block you from the server if you send too many requests in a short amount of time.
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      Tips

      • A synchronization interval of one day is usually enough for most users. However, if you need a highly accurate time and your clock drifts often, an hour should be suitable. Under no circumstances should you poll a time server more often than once every 15 minutes.
      • If you are interested in how it works, look up "Network Time Protocol".
      • If your computer is not synchronizing at the correct time, you may need to tell the Time Service to use the SpecialPollInterval setting. See this link for instructions.
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      Warnings

      • Keep in mind that it takes several seconds to synchronize the time. So, do not make the interval one second. This will cause unnecessary load to your computer, as it will be constantly running the synchronization program.
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      About This Article

      How.com.vn is a “wiki,” similar to Wikipedia, which means that many of our articles are co-written by multiple authors. To create this article, 17 people, some anonymous, worked to edit and improve it over time. This article has been viewed 272,845 times.
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      Co-authors: 17
      Updated: September 2, 2023
      Views: 272,845
      Categories: Windows
      Thanks to all authors for creating a page that has been read 272,845 times.

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