In Windows 10 build 9926, Microsoft is adding and updating a bunch of new features. In this build, Windows Insiders will see for the first time a working version of Cortana, Continuum, new improved Action Center, new apps, and much more.
Also, there are other features Microsoft is working on, but they just aren’t ready for prime time — this is the case of the new Clock experience. For years, we’ve seen the same calendar and analog clock in the System Tray, but in the Windows 10 January Technical Preview, there is a new Clock experience that Windows Insiders can enable by modifying the Registry.
This new hidden Clock experience follows the same modern design you’ll find throughout Windows 10. The interface is white, with a digital clock instead of the analog view. From the same interface, you can add more clocks using the new updated Alarms app. You’ll also see a new calendar with arrows to help you navigate through the different months, and that is pretty much everything the Clock experience has to offer at the current stage. It’s worth noting that through the new experience, you can’t access the Date and Time settings.
How to enable the new Clock experience on Windows 10
Open the Start menu, do a search for regedit, and press Enter.
Navigate the following path:
Create the following DWORD: UseWin32TrayClockExperience
Because the newly created DWORD has to have a value of 0. This is all you have to do. Now, simply, click the time and date in the System Tray and you should be able to see the new Clock experience.
Here is a view of the old and new Clock experience in Windows 10:
To go back to the old experience, simply delete the DWORD: UseWin32TrayClockExperience, or change the value of the key to 1.
Source Bav0 Twitter