What’s new in Windows 10 Technical Preview Build 9901?

A few days ago, a new build of Windows 10, 9901, leaked to the Internet. Unlike previous Technical Preview builds, this build was not intended to be released to a wide group of testers. It is not possible to upgrade to this build via the Windows Insider release cycle. Nevertheless, the leaked build contains a lot of interesting changes that I would like to share here.


Windows 10 build 9901 changelog


  • The search button has been replaced with a search bar
  • Cortana is enabled by default
  • The taskbar has a new design
  • New backgrounds

Modern UI

  • The settings charm has been removed
  • The Settings flyout now appears within an app
  • The titlebar has been revamped, full screen is now on the bar instead of inside the menu
  • Apps no longer show a "Permissions" page when it's empty
  • Apps can be installed on an SD card

Internet Explorer

  • Internet Explorer reports version 11.0.9800 (from 11.0.9879)
  • Improved support for ECMAScript 6
  • Improved support for ECMAScript non-standard


  • Settings has been revamped with a new interface
  • Windows Update has been extended with a lot of new features to replace the Control Panel counterpart
  • Calculator has been revamped
  • Alarms app has been revamped, there is now a World Clock function
  • Get started app has been revamped
  • A new Photos app has been added (not to be confused with the old Photos)
  • A new Store beta app has been added (not to be confused with the old Store)
  • Maps app has been revamped
  • Windows Feedback app has been revamped
  • Sound Recorder app has been revamped
  • Lumia Camera beta has been added as an app
  • Xbox has been added as an app (not to be confused with Games)

Via Studio384.

Support us

Winaero greatly relies on your support. You can help the site keep bringing you interesting and useful content and software by using these options:

If you like this article, please share it using the buttons below. It won't take a lot from you, but it will help us grow. Thanks for your support!

Author: Sergey Tkachenko

Sergey Tkachenko is a software developer who started Winaero back in 2011. On this blog, Sergey is writing about everything connected to Microsoft, Windows and popular software. Follow him on Telegram, Twitter, and YouTube.

7 thoughts on “What’s new in Windows 10 Technical Preview Build 9901?”

  1. I am so sick and tired of Windows. Shit code written by useless Indians, I wouldn’t even bother pirating it much less pay actual money for it. Microsoft will have to pay me to use it. Windows is only required for dumb people. Dumb people need computers too after all and they can’t operate Linux.

  2. Here we go again. The hunt will be on for drivers, if they become available as our older hardware will no longer work. I’m using win 10 preview right now but none of my win 7 drivers will work even in compatibility mode. F8 no longer gets you into safe mode I found out because trying to install a video driver made my computer unbootable so I wanted to uninstall it but safe mode isn’t working for me. My wireless driver won’t work so I have to use ethernet. But, it does seem pretty quick and peppy even with 2 gigs of ram. Just can’t see spending more $$$ to do the same thing that XP and Win 7 do very well.

Leave a Reply

Your email address will not be published.

Exit mobile version
Using Telegram? Subscribe to the blog channel!
Hello. Add your message here.