Announcing Windows 10 Insider Preview Build 16257 for PC & Build 15237 for Mobile

Hello Windows Insiders!

Today we are excited to release Windows 10 Insider Preview Build 16257 for PC to Windows Insiders in the Fast ring and also in Skip Ahead! We are also releasing Windows 10 Mobile Insider Preview Build 15237 to Insiders in the Fast ring.

We won’t have a new Windows Server Insider Preview build for Windows Insiders this week.

What’s New in Build 16257 For PC

Eye Control (beta)

Yesterday, we announced Eye Control, which makes Windows 10 more accessible by empowering people with disabilities to operate an on-screen mouse, keyboard, and text-to-speech experience using only their eyes. The experience requires a compatible eye tracker, like the Tobii Eye Tracker 4C, which unlocks access to the Windows operating system to be able to do the tasks one could previously accomplish with a physical mouse and keyboard. We are starting by supporting the EN-US keyboard layout, and we are looking to expand to more keyboard layouts in the future. We are excited to release this experience as a beta and would love your feedback!

Setting up Eye Control:

How to enable Eye Control in the Settings app.

Eye Control launchpad – When you turn on Eye Control, the launchpad will appear on the screen. This allows you to access the mouse, keyboard, text-to-speech, and to reposition the UI to the opposite side of the screen.

The Eye Control Launch Pad.

Eye Control interaction model – To interact with the UI for Eye Control, simply look at the UI with your eyes until the button activates. A visual affordance will appear around the UI that you are looking at.

Eye Control mouse – To control the mouse, select the mouse from the launchpad, position your eyes on the screen where you want the cursor to be placed, fine tune the position, and select what action you want to take (left click, double left click, right click, or cancel).

Using Eye Control to control your mouse.

Eye Control keyboard – To use the keyboard, select the keyboard from the launchpad, and dwell at the characters you want to type. You can type numbers and symbols on the &123 page and function keys on the Fn page. We currently support the EN-US keyboard layout.

Using Eye Control to type on the on-screen keyboard.

Eye Control shape-writing – Type faster with your eyes by shape-writing on the Eye Control keyboard. To use shape writing, turn it on from the keyboard settings (found on the Fn page). Once it is on, you can form words by dwelling at the first and last character of the word, and simply glancing at letters in between.  A hint of the word predicted will appear on the last key of the word. If the prediction was incorrect, you can simply select an alternative prediction provided.

Using Eye Control to do shape writing on the on-screen keyboard.

Eye Control text-to-speech – Communicate with your family and friends in person by using text-to-speech. To use text-to-speech, select text-to-speech from the launchpad. From here, you can use the keyboard to type sentences and have it spoken aloud. At the top are phrases that are spoken aloud immediately and can be edited to say different words. This uses the default text-to-speech voices, which can be changed in Settings > Time & Language > Speech > Text-to-speech.

Using Text-to-Speech with Eye Control.

Eye Control settings – Access settings from the Fn keyboard page to adjust the dwell times, turn on/off shape-writing, and turn on/off the gaze cursor used to test hardware calibration.

The Eye Control settings panel.

Known Issues:

Hardware support:

Currently, Eye Control works with select Tobii hardware. We are open to working with additional hardware vendors to provide customers a broader set of hardware options to enable this experience.

To learn more:

If you have questions or feedback on how we can continue to improve our products and services, you can also contact us through the Disability Answer Desk (now with ASL support) and Accessibility User Voice Forum. You can learn more about accessibility at Microsoft by visiting,

Microsoft Edge Improvements

Microsoft Edge introduces Acrylic which is part of our new Fluent Design System.

Console Improvements

During the Creators Update development we updated the Windows Console to support full 24-bit RGB color and today the Windows Console’s default colors are getting their first overhaul in more than 20 years! Yay!

The default color values have been changed to improve legibility of darker colors on modern screens, and to give the Console a more modern look & feel.

We updated the Windows Console to support full 24-bit RGB color.

To preserve your preferences, this new color scheme will only be visible in Properties if you clean install this build. For more details about Windows Console, head to the Command Line Blog.

Input Improvements

Windows Defender Application Guard (WDAG) Improvements

General changes, improvements, and fixes for PC

Known issues for PC

General changes, improvements, and fixes for Mobile

Known issues for Mobile

Support for 3D in Office apps

Windows Insiders who are also Office Insiders will be able to incorporate 3D objects in Word, Excel and PowerPoint. Easily insert a 3D object from the Remix 3D catalog or your PC, change its perspective and use transitions like Morph in PowerPoint to create cinematic animations between slides to bring 3D objects in your presentations to life.

Incorporate 3D objects in Word, Excel and PowerPoint.

Not an Office Insider? Sign-up here!

Community & Team Updates

We have some updates to our team!

The Team!

Joining team “Something Happened” are:

Marissa Zhang – Marissa, our intern, is reporting to Jason this summer and she is working on Insider communication channels. LinkedIn? Instagram? Forums? She is helping us choose the channels and what kind of content we want to show on each!

Vivek Elangovan – Vivek is a software engineer AND a film-maker who just finished his first feature film. He’s helping us talk to the creatives, artists, film-makers, VR designers in our Insider audience and make sure their voices are heard in product development as well! He is also going to lead the charge on app flighting.

As a reminder, the rest of the team and what they work on are:

One more thing – this month’s webcast on Mixer will be focused on our Engineering Systems. This includes the building of the Windows OS, code-flow processes, ISOs, symbols, our migration to Git, and much more. We’d love to take your questions in advance so we can try to address them in the webcast. Click here to submit your questions!

No downtime for Hustle-As-A-Service,
Dona <3