How To: Automatically Synchronize Computer Clock on Windows Startup

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A small battery is integrated in the motherboard of your computer, which allows you to operate the PC clock even when the computer is turned off. If the battery is empty, you will see error messages such as “System CMOS checksum bad – default configuration used” when the computer is started and the date and time will be reset to the BIOS manufacturer’s default date. You can still start the computer by pressing a button to continue booting, and Windows will load as usual.

Problems start with the use of the computer, where the time created, modified and retrieved on files and folders becomes confusing, emails that you have sent and received with your email client software are marked with a much older date, which causes emails to move down, all secure HTTPS sites are not loaded into your web browser, test periods can expire immediately, etc. The problems start with the computer, where the time created, modified and retrieved on files and folders is confusing, the emails you have sent and received with your email client software are marked with an older Windows has an automatic time synchronization function so that the time on your computer remains accurate, but unfortunately it is planned to run it only once a week.

Synchronize the clock with an Internet time server in the Internet time settings.

The easiest way to synchronize your clock is to use the Windows 10 settings.

  1. Open the Start menu and click Settings.
  2. Then, in the Settings dialog box, click Time and Language.
  3. Scroll to the Associated Settings section and click on Date, Time and Additional Regional Settings.
  4. The Clock and Region screen of the Control Panel is displayed. Click on Date and time.
  5. In the Date and Time dialog box, click on the Internet Time tab. Then click on Modify settings.
  6. In the Internet Time Settings dialog box, select the Synchronize with an Internet time server check box.

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Automatic synchronization of the system clock

  1. In the search field of the Start menu, enter “Date and time” and press the Enter key, it must be the date and time control panel.
  2. In the Date and Time dialog box, click on the Internet Time tab.
  3. Press the Edit Settings button. In the User Account Control dialog box, click the Continue button (if displayed).
  4. In the Internet Time Settings dialog box, click the Server drop-down arrow and select another time server. The default value is, try and see if it works for you.
  5. Press the Update Now button to update your computer’s clock and test your computer’s time.
  6. Press the OK buttons to close the dialog boxes.

Configure the system to force it to update the time it starts.

To perform a forced update, you must perform the following steps as an administrator (or system):

SC START w32time task_started

To force an update at startup, you must therefore execute this command as an administrator. You can do this with the Task Scheduler. To do this, perform the following steps as administrator:

schtasks /CREATE /TN “Set Time On Start” /SC ONSTART /RU SYSTEM /TR “SC START w32time task_started”.

Free Time synchronization software

This time, you may experience synchronization problems with your computer due to changes in settings or interference with third-party software, a defective CMOS battery or other hardware problems. If Windows does not synchronize the system time correctly, the date and time may be incorrect each time the computer is turned on, which can cause multiple computer or browser problems. To solve this problem, we have a large number of third-party time synchronization software that can update your system’s time from the Internet.


If you have an older version of Windows, you can still use your watch by the hour. There are a number of free applications that refer to the atomic clock of the Bureau of Standards in Boulder, Colorado, and adjust the internal clock of your computer with one or two clicks.

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