Microsoft have released new builds for Windows Insiders to test. Today we have build 16188 for PC and 1520 for Mobile, and once again it’s the PC build that has the interesting new features.

Microsoft have improved the pdf reading features in Microsoft Edge, you can now fill in PDF forms directly from the browsers and they had added PDF annotations support so you can write on documents using a Make a web note button (details from Microsoft):

PDF Form filling: Every now and then we encounter forms to be filled which are in PDF format. Now you can fill in PDF based forms within Microsoft Edge, save them and print them!

PDF Annotations: The annotations capability in the browser is now extended to PDFs as well. You can use the “Make a Web Note” button on the top right of browser frame to invoke an annotations bar.

Using different modes in the annotations bar, you can ink on the PDF, highlight text and erase your annotations. You can save the work onto the PDF file for later use.

Also added are improvements to the table of contents in Edge:

Table of Contents for easier navigation: For reading longer documents, you can now use the Table of Contents (ToC) feature for easier navigation. You will see the ToC button on the left of the PDF toolbar if the document has ToC defined by the author. Click on any heading in the side pane to navigate to that part of the document.

There is also improved formatting:

Better viewing and navigation: Sometimes PDF documents, such as documents that are copies of documents scanned in, are not in proper orientation and need to be rotated to view them properly. Now you can rotate the PDF documents for better readability. Look for the rotate button in the toolbar. 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. Using the “Layout” flyout menu on the toolbar, now you can switch from one page to two page layouts and change to page-wise scrolling for better navigation experience for longer documents.

Other changes including Windows Defender Application guard for enterprise users (see Microsoft’s post for details) and a new icon for the Windows Insider settings:

Another change is that Cortana’s settings are now integrated with the other Windows settings:

Here are the other changes and known issues and look out for my hands on video soon:

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. To learn more about universal dismiss and how apps can enable it check out our blog post here.

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. See this forum post for more details.

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.

On the mobile side there are just two fixes and two known issues:
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.

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