Microsoft Adds Container-based Browser Isolation In Latest ‘Redstone 3’ Build

Windows 10 Redstone 3 test build 16188 adds new PDF annotation, navigation features, as well as Edge session isolation in Windows Defender Application Guard.

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The latest Windows 10 Insider Preview Build 16188 for PC, released to Windows Insiders in the Fast ring, along with a Mobile Insider Build 15210 to Insiders in the Fast ring, bring awesome new features in Microsoft Edge PDF Reader, Windows Defender and Cortana.

This build brings in a new interactive toast notification replacing the previous modal of Windows Update dialog, so users can easily be aware of an available update without it interrupting work.

However, Windows Insiders on Windows 10 Enterprise Insider Preview will not be able use these builds in following languages: AR-SA, DA-DK, EN-GB, ES-MX, FI-FI, FR-CA, NB-NO, and TH-TH.

This build is packed with a bunch of new features for Edge's PDF reading experience including:

  • PDF Form filling lets you eadily fill-in PDF based forms, save them and print them!
  • PDF annotations, in Edge a new "Make a Web Note" button on the top right of the browser frame is added to invoke an annotations bar, which houses different modes, so you can ink on the PDF, highlight text and erase annotations, as well as save onto the PDF file for later use.
  • Microsoft Edge PDF Annotation button
    PDF Annotation button
  • Table of contents (ToC) button on the left of the PDF toolbar offer the ability for easier navigation when reading longer documents. If the document author has ToC defined, you can click on the heading in the side panel to navigate to a part of the document.
  • Microsoft Edge ToC navigation
    ToC navigation
  • Now, if a PDF document is not in proper orientation, using the 'rotate button' in the toolbar, you can rotate the documents for better readability. Also, it is important to be able to adjust the reading layout of the files to best suit user's needs based on the screen size, type etc.
  • Also, a new "Layout" flyout menu now lets you switch from one page to two page layouts and change to page-wise scrolling for better navigation experience for longer documents.
  • Microsoft Edge PDF Layout flyout
    PDF Layout flyout

Another feature for the Edge, "Windows Defender Application Guard," is now available in Windows Insider Previews for Enterprise users in the Fast Ring, and provides maximum level of protection against malware and zero day attacks.

To test, just turn on Guard using "Turn Windows features on or off" dialog, then select the checkbox for Windows Defender Application Guard, and click OK. Next, restart and open Edge, you will see a new menu choice for "New Application Guard window" under the Edge menu. Clicking on this will open a new Edge Window, just enter a website address in the address bar to visit and that session will be isolated in Application Guard.

"Windows Defender Application Guard requires Windows 10 Enterprise Edition and Hyper-V. Your PC must be capable of running Microsoft Hyper-V to use Application Guard."

Turn on Windows Defender Application Guard
New Application Guard window in Microsoft Edge menu
New Application Guard window

A new Ninjacat Icon representing the Windows Insider Program under Settings -> Update & security -> Windows Insider Program is added, too. Another enhancement feature in the Settings app, integrates all of Cortana's settings, so you can easily access them by clicking the settings gear in Cortana, or going to Settings -> Cortana, or just searching for the setting you're interested in.

Updates to Magnifier Settings page brings the new features, namely:

  • now easily follow Narrator around the screen with Magnifier by selecting "Follow the Narrator cursor".
  • embedded list of all Magnifier shortcuts into the Settings page for quick reference.
  • zoom using mouse wheel by holding down a key combination (Win + Ctrl)
  • option to open Magnifier settings from anywhere in the OS by pressing Ctrl + Win + M.
  • set up preferred Magnifier mode in Settings.
  • option to select preferred zoom increment when using Magnifier.

For more information, see the full changelog below.

Changes, improvements, and fixes for PC

  • We've fixed an issue resulting in the candidate window not appearing when typing in certain apps when using Simplified Chinese IMEs or the Changjie and Quick IMEs
  • We fixed an issue where explorer.exe would crash and restart if you tapped any of the apps listed in the Windows Ink Workspace's Recent Apps section.
  • Double-clicking the Windows Defender Security Center icon in the notification area will now open Windows Defender Security Center.
  • Universal dismiss of Cortana reminders is now enabled across Windows devices on this build or higher.
  • Localized apps on localized x64 Windows 10 Insider Preview builds will now work. We believe this will also address the issue some Insiders were reporting where the Open and Save dialogs weren't opening in certain desktop (Win32) apps.
  • We fixed an issue resulting in decreased Action Center reliability in recent flights.
  • We fixed an issue with the Chinese Pinyin IME where typing a sequence of characters beginning with 'hu' into certain apps would result in an unexpected delay before the candidate window updated to reflect the current composition.

Known issues for PC

  • PC Reset via Settings > Update & security > Recovery will not work on non-English Insider Preview builds.
  • Some Insiders have reported seeing this error “Some updates were cancelled. We’ll keep trying in case new updates become available” in Windows Update.
  • Surface 3 devices fail to update to new builds if a SD memory card is inserted. The updated drivers for the Surface 3 that fix this issue have not yet been published to Windows Update.
  • Navigating to Settings > Update & security > Windows Update may crash Settings app. You can simply re-open the Settings app again and it should work again.
  • Navigating to Settings > Personalization > Lock screen may crash Settings app.
  • Outlook 2016 may hang on launch due to an issue where the spam filter gets stuck reading the Outlook Data File and the UI waits indefinitely for it to return. We’re investigating.Â
  • Your PC may hang when shutting down the PC.
  • In certain cases, Start may fail to launch but launches normally on the second try.

Changes, improvements, and fixes for Mobile

  • We fixed an issue with the Glance screen where the time was not updating.
  • We fixed the token issue so when your device syncs to the service, text messages should show back up.

Known issues for Mobile

  • The copyright date is incorrect under Settings > System > About. It shows as 2016 when it should be 2017. Thanks to the Windows Insiders that reported this!
  • In some cases, the WeChat app may crash on launch.