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If time on Windows 10 fails to synchronize online via "An error occurred while Windows was synchronizing with time.windows.com" error, here's how to fix it.

The date and time settings should be set correctly on your Windows machine. Because incorrectly set date and time will cause issues such as – Windows Updates not being offered on time and while browsing the Internet, some secure sites couldn’t be displayed if the dates on their SSL certificate is beyond the scope of date and time settings on your system. Windows Store too won’t work properly if date and time settings are incorrect. So to avoid such kind of issues, users are recommended to let date and time automatically managed by Windows or as per their time zone. Moreover users are also recommended to make sure they synchronize time settings with an online server such as time.windows.com.

To synchronize time on Windows 10 with an online server, navigate to Control Panel > Clock, Language and Region > Date and time > Set the time and date > Internet time > Change settings > check Synchronize with an Internet time server and click Update now.

But sometimes the synchronization may fail with following error:

An error occurred while Windows was synchronizing with time.windows.com. The peer is unresolved.

An Error Occurred While Windows Was Synchronizing With time.windows.com Windows 10

As per above mentioned error, Windows automatically try to resolve this issue by periodically checking the synchronization. However, in case if the synchronization fails consequently for long time, you need to fix this issue. Worth the mention here that, some users may get ‘This operation returned because the timeout period expired‘ statement with the error, instead of ‘The peer is unresolved‘ part.

Whatever, if the time synchronization keeps failing, here is what you can do to overcome this issue:

FIX : An Error Occurred While Windows Was Synchronizing With time.windows.com In Windows 10

FIX 1 – Workarounds/General Suggestions

1. Simply restart your system and see if it helps.

2. Make sure you’ve allowed Windows to set date and time automatically, in Settings app.

3. Ensure that your system is connected to the Internet as synchronization will only initiate if you’re online.

4. Try changing the synchronization server to time.nist.gov and click Update now.

An Error Occurred While Windows Was Synchronizing With time.windows.com Windows 10

4. Temporarily disable the third-party antivirus, if installed on your machine.

5. Do review your firewall configuration because it sometime block time server and cause the hitch.

FIX 2 – Using Services Snap-in

1. Press W8K + R and type services.msc in the Run dialog box, hit Enter key to open Services snap-in.

Services Windows 10

2. In Services window shown below, scroll down to look for Windows Time service. Since you’re facing this issue, this service might not be Running. So right click on the service and select Start.

An Error Occurred While Windows Was Synchronizing With time.windows.com Windows 10

Close Services window and verify the status of the issue.

FIX 3 – Using Command Prompt

In problem continues, you need to re-register Windows Time as mentioned below.

1. Open administrative Command Prompt.

2. Type these commands one-by-one and press Enter key after each:

w32tm /debug /disable
w32tm /unregister
w32tm /register

An Error Occurred While Windows Was Synchronizing With time.windows.com Windows 10

Close Command Prompt and retry FIX 2 to start Windows Time service again. This should fix the problem.

Hope something helps you!


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  • Kapil Arya : ^^ Glad it helped you, Samsul 😊...

    13 hours ago

  • Samsul Arif : Thank you so much! This tutorial is worked for me :D...

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  • Jeff : fix 1 worked. thank you very much....

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