Keeping your system time accurate is extremely important in Windows 11. Many features such as internet browsing, software updates, file timestamps, and security certificates rely on correct system time. If your system clock is wrong or not syncing automatically, it can cause errors like websites not loading, login issues, or update failures.
Windows 11 uses something called the Windows Time Service (W32Time) to automatically sync your computer’s clock with an internet time server using the Network Time Protocol (NTP).
However, sometimes this synchronization fails or does not happen properly. In such cases, you may need to force Windows 11 to sync time manually.
In this complete guide, you will learn multiple methods—from basic to advanced—to force time synchronization in Windows 11.
Understanding Time Sync in Windows 11
Before jumping into solutions, it’s helpful to understand how time sync works.
Windows 11 connects to internet time servers such as:
time.windows.comtime.nist.govpool.ntp.org
These servers provide accurate global time. Your system periodically checks and updates its clock using them.
If this process fails, your system may:
- Show incorrect time
- Not sync automatically
- Display “Time synchronization failed” errors
Method 1: Force Time Sync Using Command Prompt (Best Method)
This is the fastest and most effective method.
Steps:
- Press Start
- Type Command Prompt
- Right-click and select Run as administrator
- Enter the following command:
w32tm /resync
- Press Enter
If successful, you’ll see a message like:
“The command completed successfully.”
What this command does:
- Forces Windows to immediately sync with the configured time server
Important Tip:
If it fails, it may show:
- “The service has not been started”
- “No time data available”
Don’t worry—use the next method.
Method 2: Restart Windows Time Service and Sync Again
Sometimes the issue is simply that the time service is not running.
Steps:
Open Command Prompt as Administrator and run:
net stop w32time
net start w32time
w32tm /resync
This:
- Stops the service
- Restarts it
- Forces synchronization again
Restarting the service often fixes temporary glitches.
Method 3: Completely Reset Windows Time Service
If syncing still fails, you should reset the entire service.
Steps:
Run these commands one by one:
net stop w32time
w32tm /unregister
w32tm /register
net start w32time
w32tm /resync
What this does:
- Removes the time service
- Reinstalls it
- Starts it fresh
This method is very effective for fixing corrupted configurations.
Method 4: Force Sync With a Specific Time Server
Sometimes the default server may not work. You can manually set a reliable server.
Steps:
Run this command:
w32tm /config /manualpeerlist:"time.windows.com,0x1" /syncfromflags:manual /update
Then restart service:
net stop w32time
net start w32time
w32tm /resync
Alternative servers you can use:
- time.google.com
- time.cloudflare.com
- pool.ntp.org
Changing the server often fixes sync failures.
Method 5: Sync Time Using Windows Settings (GUI Method)
If you prefer not using commands, you can use Settings.
Steps:
- Press Windows + I
- Go to Time & Language
- Click Date & Time
- Scroll down
- Click Sync now
This manually triggers synchronization.
You can also:
- Enable Set time automatically
- Enable Set time zone automatically
Method 6: Change Internet Time Server (Control Panel)
If syncing fails repeatedly, change the server.
Steps:
- Press Windows + R
- Type: timedate.cpl
- Go to Internet Time tab
- Click Change settings
- Choose or enter a new server (e.g., time.nist.gov)
- Click Update now
This helps if the default server is down.
Method 7: Check If Windows Time Service Is Running
The sync will fail if the service is disabled.
Steps:
- Press Windows + R
- Type: services.msc
- Find Windows Time
- Ensure:
- Status: Running
- Startup Type: Automatic
If stopped:
- Click Start
Method 8: Verify Time Sync Status
You can check if sync is actually working.
Command:
w32tm /query /status
Look for:
- Source: time.windows.com
- Last Sync Time
If it shows:
- Local CMOS Clock → Sync is NOT working
Method 9: Allow NTP Through Firewall (Important Fix)
Windows uses UDP port 123 for time sync.
If blocked:
- Sync will fail
Fix:
- Open firewall settings
- Allow UDP port 123
Antivirus or corporate networks may block this.
Method 10: Create Automatic Time Sync Task (Advanced)
If your PC never syncs on startup, you can automate it.
Steps:
- Open Task Scheduler
- Create a new task
- Set trigger:
- At log on
- Add action: w32tm /resync
- Enable Run with highest privileges
This ensures time sync every login.
Common Errors and Fixes
1. “The service has not been started”
Fix:
net start w32time
2. “No time data available”
Fix:
- Change time server
- Check internet connection
3. “Required time change too big”
This happens when:
- Your clock is far off
Fix:
- Manually set approximate time first
4. Time resets after restart
Possible causes:
- CMOS battery issue
- BIOS time incorrect
Fix:
- Replace battery
- Update BIOS clock
Best Time Servers You Can Use
Here are reliable NTP servers:
- time.windows.com
- time.google.com
- time.cloudflare.com
- pool.ntp.org
Using a reliable server improves sync accuracy.
Why Time Sync Is Important
Correct system time ensures:
- Secure browsing (SSL certificates)
- Accurate file timestamps
- Proper Windows updates
- Login authentication
- App compatibility
Even a few minutes difference can break certain services.
Pro Tips for Better Time Sync
- Always keep Set time automatically ON
- Use a reliable internet connection
- Avoid blocking NTP in firewall
- Restart time service occasionally
- Keep BIOS clock accurate
Final Thoughts
Forcing Windows 11 to sync time with a time server is usually very simple, but sometimes deeper troubleshooting is required.
The best and fastest solution is:
w32tm /resync
If that doesn’t work, resetting the Windows Time service or changing the time server will almost always fix the issue.
In most cases, combining these steps:
- Restart service
- Set a reliable server
- Force resync
will completely resolve the problem.
