Windows 11 normally synchronizes its clock automatically with an internet time service. If the displayed time is wrong, first check the time zone and automatic settings before manually changing the clock. A correct system time is important for websites, certificates, sign-ins, file timestamps, scheduled tasks, and other Windows services.
Synchronize the clock from Settings
- Open Settings.
- Select Time & language.
- Open Date & time.
- Turn on Set time automatically.
- Review the time-zone setting and enable automatic time-zone detection if it works reliably for your location.
- Find the additional synchronization option and select Sync now.
Windows should contact its configured time source and update the clock. The Settings page can display information about the most recent successful synchronization.
Check the time zone when the clock is off by whole hours
If minutes and seconds look correct but the hour is wrong, the problem is often the selected time zone rather than failed synchronization. Correct the zone instead of manually moving the clock forward or backward.
Work computers can use a domain time source
A Windows PC joined to an Active Directory domain can synchronize time through the organization’s domain hierarchy. Do not replace that configuration with a public time server unless your administrator instructs you to do so.
Persistent errors can indicate another problem
If the clock repeatedly becomes incorrect after shutdown, check Windows updates and firmware, and consider whether the computer’s real-time clock or CMOS battery is failing. Network filtering can also prevent successful time synchronization.
Avoid random time-server tweaks
Changing services, registry values, or time-server addresses is unnecessary for most home PCs. Use Windows’ built-in synchronization first and make advanced changes only when troubleshooting a documented problem.
After correcting the clock, retry any website, authentication, or application that previously reported certificate or time-related errors.
Kermit Matthews is a freelance writer based in Philadelphia, Pennsylvania with more than a decade of experience writing technology guides. He has a Bachelor’s and Master’s degree in Computer Science and has spent much of his professional career in IT management.
He specializes in writing content about iPhones, Android devices, Microsoft Office, and many other popular applications and devices.