Windows 10 Insider Preview Build 14915 for PC and Mobile arrives on the Fast ring

It’s been a while since Microsoft rolled out a new Windows 10 preview build for Insiders on the Fast ring. The software company has been busy putting together future plans for the new OS, and promises we’ll see the results of these endeavors in the coming months.

Today, however, Microsoft rolls out new Build 14915 for PC and Mobile, with the primary focus being on improving app and update downloads.

Microsoft introduced a BitTorrent-like Delivery Optimization feature in the Windows 10 November Update, but from today Insiders who have the feature enabled will be able to use it to download the latest Insider Preview builds, OS updates, and app updates from other PCs on their local network, as well as from other PCs on the Internet.

The way it works means your PC will also be used to send parts of apps and updates to other users.

Delivery Optimization is on by default, but you can check its status (and disable it if not required) by going to Settings > Update & security > Windows Update > Advanced options. Select Choose how updates are delivered.

Other improvements and fixes for PC in this build include:

• Fixed the issue with being unable to use the power button on the Start menu.
• Fixed the issue causing Cortana’s text to speech capabilities to not work. Cortana should be able to read text messages out loud for you, tell jokes, sing, or give verbal prompts as expected.
• Fixed the issue causing the Settings app to crash on certain editions of Windows 10 when navigating to different settings pages due to a missing .dll file.
• Made a number of improvements to translations, including fixing an issue in Windows Update where it would say "your phone is up to date" in French when confirming that your PC was up to date.
• Changing functionality via Settings > Update & security > Windows Insider Program such as your ring settings should now work again on this build. For more information -- see this forum post.
• Fixed a compatibility issue from a recent platform change that causes apps such as Yahoo Mail, Trivia Crack, Google and the Skype Translator Preview app to crash.
• Fixed an issue resulting in some Insiders experiencing a delay in Mail notification toasts appearing.
• Fixed an issue where the “Open with" dialog’s "Look for another app on this PC" link wasn’t working if the dialog appeared after using the "Run" dialog to open a file with an unassociated file type.
• Updated the Connect flyout so that the clickable area for each device listed now spans across the full width of the flyout.
• Fixed an issue where if a Chinese Input Method Editor is active it could result in logging in to not succeed after device goes into and is woken up from Connected Standby.
• Fixed an issue where for certain websites in Microsoft Edge, using CTRL + A to select all text and then copying it and trying to paste it into Notepad wouldn’t paste anything.
• Fixed an issue where importing favorites into Microsoft Edge from Internet Explorer would fail if the Favorites folder had been redirected to another folder, for example "C:\Users\<user>\Documents\Favorites".

Known issues for PC include:

• Adobe Acrobat Reader crashes when you try to launch it.
• You may experience a black screen when signing out and switching to another user account and will be unable to log in to that account. A reboot of your PC should allow you to log in to that account.
• Bash may not work after upgrading to this build. To get it working again, go to "Turn Windows features on or off", scroll down and check "Windows Subsystem for Linux (beta)" and click ok. After a reboot, Bash should work again.
• The Settings app may crash when going to Settings > Personalization.

Improvements and fixes for Mobile include:

• Fixed the issue causing apps to get stuck in a pending state if you move apps between a SD card and internal storage (either direction).
• Fixed the issue causing Cortana’s text to speech capabilities to not work. Cortana should be able to read text messages out loud for you, tell jokes, sing, or give verbal prompts as expected.
• Changing functionality via Settings > Update & security > Windows Insider Program such as your ring settings should now work again on this build. For more information -- see this forum post.
• Fixed a compatibility issue from a recent platform change that causes apps such as Yahoo Mail, Trivia Crack, Google and the Skype Translator Preview app to crash.
• Made a number of improvements to translations, including fixing an issue with Store app install notifications, where the wrong verb was used in German when letting you know to check out the app.
• Updated "You need to fix your MSA" notification toast logic, so it will no longer notify you multiple times in quick succession.
• Fixed an issue where examining Microsoft Edge’s advanced settings would result in subsequent downloads in Edge saving to the default locations, rather the preferred locations set under Settings > System > Storage.
• Fixed an issue for Continuum-capable devices that could result in being temporarily unable to connect to a previously paired Windows 10 PC.
• Updated the settings for sounds so that .mp3 or .wma files downloaded straight from OneDrive or copied from File Explorer to the phone’s Ringtones folder will now display automatically in the list of available sounds for ringtones, alarms and notifications.

Microsoft doesn’t have any known issues to share regarding this Mobile build.

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