Today we are excited to be releasing Windows 10 Insider Preview Build 14931 for PC to Windows Insiders in the Fast ring.

We wanted to include a reminder about build expiration. Since September 15th, PCs running really old Insider Preview builds started to see build expiration notifications once a day. Then on October 1st, these PCs will start rebooting every 3 hours and then on October 15th – these PCs will stop booting all together. If your PC is running one of these old Insider Preview builds, please make sure you update to Build 14926 or newer via Settings > Update & security > Windows Update. Build 14926 and newer has an updated expiration date of May 1st, 2017. If your PC is running the Windows 10 Anniversary Update (Build 14393) in the Slow and Release Preview rings today – this does not apply to you and you will not be notified of your build expiring.

Thanks for being patient with us as we upgraded some of our engineering tools last week. Our build monitoring system is purring again and today we are excited to be releasing Windows 10 Insider Preview Build 14926 for PC and Mobile to Windows Insiders in the Fast ring.

Just as we’ve always done with pre-release versions of Windows, Insider Preview builds have expiration dates. Starting tomorrow September 15th, PCs running really old Insider Preview builds will start to see build expiration notifications once a day. Then on October 1st, these PCs will start rebooting every 3 hours and then on October 15th – these PCs will stop booting all together. If your PC is running one of these old Insider Preview builds, please make sure you update to Build 14926 via Settings > Update & security > Windows Update. Build 14926 has an updated expiration date of May 1st, 2017. If your PC is running the Windows 10 Anniversary Update (Build 14393) in the Slow and Release Preview rings today – this does not apply to you and you will not be notified of your build expiring.

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There are now more ways to get rewarded with Microsoft. Microsoft Rewards is a new rewards program that just launched earlier this week. It builds on the foundation of Bing Rewards, but with expanded ways to earn. With Microsoft Rewards, you earn points for searching with Bing, shopping at the Windows and Microsoft stores, and browsing the web with Microsoft Edge. As a Windows Insider, you can continue to earn points even on Insider Preview builds. Then you can redeem your points for Xbox or Windows gift cards and pick from thousands of games, movies, TV shows, music, and apps. Or you can use your points to get Microsoft Store discounts, Skype Credits, Xbox Live Gold memberships, and more, or even donate them to charity. To join, click here!

Snooze in Microsoft Edge: We know you all love when we get creative with you, so we have added an experimental “Snooze” action on a tab in Microsoft Edge which provides you with a way to set a Cortana reminder on the website you are viewing. People often keep tabs open in their browser indefinitely as a “to do” list, and do not close those tabs until the action associated with that website is complete. This feature lets you put a site into a Cortana reminder that will show up as a notification and in Action Center, allowing you to quickly open that site in Microsoft Edge when you’re ready to get back to it.

Updated Wi-Fi settings page (Mobile): As part of our experience of unifying the settings experience across devices – we have updated the Wi-Fi settings page via Settings > Network & wireless > Wi-Fi on Mobile to match how it works on PC. The new Wi-Fi settings page isn’t complete yet as we continue to port over functionality. If need, you can fallback to using the Wi-Fi (legacy) settings page to access any missing functionality. In addition, we added the capability for you to connect to WPS (Wi-Fi Protected Setup) networks on your phone.

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Improving your PC upgrade experience: One of the ongoing feedback items we’ve heard is how the apps that come preinstalled with Windows will reinstall after each upgrade – particularly noticeable for our Insiders that receive multiple flights per month. We’ve heard your feedback, and starting with Build 14926, when your PC updates it will check for apps that have been uninstalled, and it will preserve that state once the update has completed. This means if you uninstall any of the apps included in Windows 10 such as the Mail app or Maps app, they will not get reinstalled after you update to a newer build going forward.

Making pin login easier: Ever tried to enter your pin, only to discover the numbers you’ve been typing are nowhere to be seen because Num Lock was off? We’re happy to announce that that will no longer happen! With this build, regardless of your Num Lock state, numbers will be input if you’re typing into the pin password field. Let us know what you think!

It’s been a busy few weeks here in Redmond. Last week, we had engineering reviews where each team presented their plans for the next few months to make sure that the customer scenarios we want to deliver are all prioritized appropriately. It was great to see all of the Windows leaders in the same room and the energy and excitement about this release was obvious by some of the live-tweeting that went on during the week. You will see the results of the reviews in the builds that will be coming out in the next few months.

Now, onto the news you all have been waiting for! Today we are excited to be releasing Windows 10 Insider Preview Build 14915 for PC and Mobile to Windows Insiders in the Fast ring.

Improving app and update downloads in Windows 10 with Delivery Optimization

Starting today, Windows Insiders that have Delivery Optimization enabled will be able to download new Insider Preview builds, OS updates, and app updates from other PCs on their local network as well as from other PCs on the Internet. We introduced Delivery Optimization with the Windows 10 November Update giving users the ability to get updates from PCs on a local network and are now enabling the ability to get updates from PCs on the Internet. When enabled, your PC may also send parts of apps or updates that you have downloaded using Delivery Optimization to other PCs.

To check your settings for Delivery Optimization, go to Settings > Update & security > Windows Update > Advanced options and choosing “Choose how updates are delivered.”

Microsoft has release Windows 10 Insider Preview Build 14905 for PC AND Mobile to Windows Insiders in the Fast ring!

Improvements and fixes for PC

• fixed an issue causing a large blank space to appear between the address bar and web content after the address bar moves back to the top when opening a new tab in Microsoft Edge.
• updated Narrator Scan mode for table navigation to now support CTRL + ALT + HOME to go to the beginning of the table CTRL + ALT + END to go to the end of the table.
• Microsoft Edge now supports the CTRL + O keyboard shortcut for setting focus to the address bar.
• fixed an issue resulting in Sketchpad and Screen Sketch crashing after trying to change the ink color twice in a row when the ruler was visible.