What To Do When Windows 11 Time Synchronization Fails With Time Servers

Why Does 🪟 Windows 11 Time Synchronization Fail?

Windows 11 time synchronization fails most often when the background time service stops running, the default internet time server is too busy to respond, or your network blocks the required communication port. A dead motherboard battery, incorrect time zone settings, or software interference can also stop your computer clock from updating automatically over the internet.

When this process fails, it is usually because:

• The background Windows Time service has stopped running or crashed.
• The internet time server your computer is trying to reach is busy or offline.
• Your network settings, router, or firewall are blocking the network port required for time updates.
• Your computer’s internal hardware battery is failing, causing the system to lose time when the PC turns off.

Method 1Use Windows Settings for a Quick Sync

Windows 11 time synchronization can be fixed quickly by using the manual sync button in your main system settings. Opening your date and time settings and clicking the sync now button forces your computer to check in with the official time server immediately, which usually corrects small clock errors without needing any advanced troubleshooting steps.

1. Press the Win+I on your keyboard to open the Settings ⚙️ app.

   

2. Click on Time & language on the left side menu.
3. Click on Date & time.
4. Make sure the switch next to Set time automatically is turned on. If it is already on, turn it off and turn it back on to reset the connection.
5. Scroll down to the section that says Additional settings.
6. Find the button labeled Sync now and click it.

Watch the screen to see if Windows displays a successful sync message. If it says the sync was successful, your clock should now match the correct time.

Method 2Change Your Internet Time Server

Changing your internet time server helps fix Windows 11 time synchronization when the default server is down, blocked, or overwhelmed with requests. Switching to an alternative reliable server like time.google.com or time.windows.com through the classic control panel settings lets your computer bypass connection blocks and pull the correct time successfully.

1. Press the Windows key + I to open Settings.
2. Click on Time & language and then select Date & time.
3. Scroll all the way down to the bottom of the page and click on Date, time & regional formatting or look for related settings depending on your exact Windows version. Note: On some updates, you may need to open the classic Control Panel by typing Control Panel in the Windows search bar, selecting Clock and Region, and clicking on Date and Time.
4. In the Date and Time window that pops up, click on the tab named Internet Time.
5. Click the button that says Change settings. (Admin privileges required)
6. Make sure the box next to Synchronize with an Internet time server is checked.
7. Click the drop-down menu under Server and choose a different option, such as time.google.com or time.cloudflare.com.
8. Click Update now to test the connection, then click OK.

Method 3Restart the Windows Time Service

Restarting the Windows Time service fixes time synchronization failures caused by a stuck or crashed background program. Opening the Windows services manager and restarting the time service clears out temporary glitches and allows your computer to resume normal automatic clock updates with internet time servers.

1. Click the Windows Start button, type Services in the search bar, and click the Services app icon. (Admin privileges required)

   

2. Scroll down the alphabetical list until you find Windows Time.
3. Right-click on Windows Time and choose Properties.
4. Look for the setting labeled Startup type and click the drop-down menu to change it to Automatic.
5. If the service status says "Stopped," click the Start button to turn it on. If it is already running, click Stop, wait a few seconds, and then click Start to restart it.
6. Click Apply and then click OK.

Method 4Use Command Prompt or PowerShell to Force a Resync

Forcing a time resync using Command Prompt in Windows 11 lets you clear out corrupted time settings and pull a fresh update directly from internet servers. Running specific commands to stop the time service, register the time client, and start the service again will often fix stubborn clock sync errors that standard settings cannot solve.

1. Click the Windows Start button, type Command Prompt, right-click it in the results, and choose Run as administrator. (Admin privileges required)
2. Type the following command and press Enter on your keyboard to stop the time service:net stop w32time
3. Next, type this command and press Enter to register the time service again:w32tm /register
4. Type this command and press Enter to start the time service back up:net start w32time
5. Finally, type this command and press Enter to force your computer to sync with the time server:w32tm /resync

You should see a message confirming that the command completed successfully.

Method 5Check Your Network Port and Firewall Settings

Checking your network port and firewall settings is necessary when security software blocks UDP Port 123, which is the specific pathway Windows 11 uses for time synchronization. Ensuring your router, antivirus, or firewall allows traffic through this port lets your computer communicate with internet time servers without interference.

If you are using a strict third-party security suite:

• Open your antivirus or firewall application settings.
• Look for network rules, firewall exceptions, or blocked port settings.
• Ensure that outbound traffic on UDP Port 123 is allowed.

Advanced Method: Check Your Hardware CMOS Battery (Unique Expert Tip)

Checking your hardware CMOS battery solves the issue when your Windows 11 computer loses the correct time completely every time it shuts down or restarts. A dead or dying coin-sized battery on your motherboard stops the hardware clock from running while the power is off, meaning your computer cannot keep time without replacing the battery.

Motherboards inside desktop computers contain a small coin-sized CMOS battery that keeps the system clock running even when the computer is unplugged from the wall. If the CMOS battery dies, your computer forgets the time and date the moment power is cut. When Windows boots back up, the operating system starts at an incorrect default date, which breaks secure connections before the internet has a chance to update the time and date.

Advanced Method: Check Event Viewer Logs for Hidden Errors (Unique Expert Tip)

Checking Event Viewer logs in Windows 11 helps you find hidden error codes and pinpoint the exact technical reason why your time synchronization keeps failing. Looking through the system and time service logs reveals specific warnings and error messages that guide you toward the correct fix for your clock issues.

1. Click the Windows Start button, type Event Viewer, and open the app.
2. In the left sidebar, click the arrow next to Applications and Services Logs to expand it.
3. Click on Microsoft, then click on Windows, and scroll down to find Time-Service. Click on Operational under it.
4. Look through the list of recent events in the middle window. Warnings and errors will display red icons or yellow exclamation points.
5. Click on an error to read the description at the bottom of the screen. Look for error codes that mention server timeouts, access denied messages, or network failures, which will tell you if your issue is caused by a firewall, a dead server, or a permission problem.

Summary

Windows 11 time synchronization failures usually stem from a stopped background service, a blocked network port, or an unresponsive internet time server. You can fix most issues quickly by using the sync now button in your settings, restarting the Windows Time service, or running a manual update command, while hardware time loss points to a dead motherboard battery.