Enable the Hidden Calendar, Clock and Spartan in Windows 10

The latest Windows 10 preview includes a lot of new features, settings, and design. If that’s not enough for you, here’s how to enable a couple more things.

If you’ve been testing the latest build of Windows 10 — 9926, you know there’s already a plethora of new features and options. If new things like Cortana, Action Center, File Explorer, and icon redesigns aren’t enough for you, here’s how to enable the new calendar and clock feature, and a preview of the new Spartan browser benefits via IE.

Note: This requires you to tweak the registry and since it’s a technical preview and you don’t have it installed on your production computer, you might as well have some fun.

Hidden Windows 10 Calendar and Clock

Adding the feature requires an easy registry tweak. Start by going to HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\ImmersiveShell and create a new DWORD (32-bit).


Name it UseWin32ClockExperience as shown below and then close out of Registry Editor.


Now all you need to do is click on the clock in the system tray and you’ll see a new calendar view – no restart required. You can also click Additional Clocks and get show the Alarms app.

That’s about all there is to it, the feature isn’t fully functional yet, but it still allows you to get a glimpse of more that’s coming.

calendar windows 10

Enable Spartan Browser Edge Engine

Microsoft announced its new browser coming in Windows 10 that is currently called Project Spartan. It’s going to be a new streamlined version of a web browser that is designed to work across the entire Windows 10 device family. The real preview of how it should look is pictured below.

Spartan Browser

But if you would like to get an idea of how it will bring speed improvements to IE, you can enable the experimental mode.

To do it, launch IE and type: about:flags into the address bar and hit Enter. Then tick Enabled under the Enable Experimental Web Platform Features section. Also, if you enable Custom User Agent, it will trick websites that need IE specifically into using the Spartan Edge engine.

This trick won’t change the appearance of IE to the new browser look, but is important for developers and should bring a bit of speed improvement over the existing IE engine.

about flags

If you’re not comfortable running the technical previews of Windows 10, you can follow its ongoing evolution by joining out Windows 10 forum.



  1. Paul Hogan

    January 28, 2015 at 4:15 pm

    I have tried enabling the Spartan Browser Edge Engine as shown, but I immediately get the message, Internet Explorer has stopped working as soon as I click enable.


  2. Ron Lund

    February 1, 2015 at 11:59 am

    Hmmmm……well! I tried the little suggestion on checking out a different clock and etc. Nothing happened. Not sure why not……did everything just as you suggested. Maybe I “really do” need to do a restart or something. Think I will forget about it.

    • Mathias

      February 4, 2015 at 12:35 am

      Its actually like this UseWin32TrayClockExperience and not UseWin32ClockExperience Delete the orig record and add the new one. it will immediately work

    • Juanita Moore

      October 27, 2015 at 7:53 am

      Value has to be changed to 1 from 0.

  3. OUTraged

    February 6, 2015 at 11:01 am

    Does nothing. I made the Dword, clicked the clock. Nothing happens. Its just default ugly clock still…..this is obviously fake.

    • Chome

      February 8, 2015 at 4:06 am

      You are obviously an idiot for calling something a fake because it didn’t work for you.

    • Juanita Moore

      October 27, 2015 at 7:58 am

      I just found this site, so a bit late–you likely will not see this, but they forgot that little detail! Change value data to 1 and it works!

  4. dfsf

    February 12, 2015 at 12:56 am


  5. Tony

    February 19, 2015 at 11:14 pm

    It worked for me. As long you have the name right, you should be able to see this: Hidden Windows 10 Calendar and Clock…

  6. nick

    February 24, 2015 at 3:31 pm

    used UseWin32TrayClockExperience and it worked!

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