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How to Change the Date and Time in Windows 10
If the date or time on your Windows 10 computer is incorrect, you can quickly and easily change it through your computer's Settings app.
While you can set Windows 10 to automatically determine the time based on your current location, this doesn’t always work well. You may still get the wrong time when you start Windows, and it can be frustrating to keep changing it.
Some of the causes of this issue include malware, issues with the Windows Time service, incorrect time zone settings, a faulty CMOS battery, an outdated BIOS, or a Windows 10 update running on your PC.