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Windows 10 PC build 14931 now available for Fast ring Insiders

Surface Insider Rings
Surface Insider Rings (Image credit: Windows Central)

Microsoft has just started rolling out a new Windows 10 PC preview build for Insiders on the fast ring, that features more fixes and improvements. We're now a couple months into the development of Redstone 2, so it shouldn't be long before we start seeing some big features show up.

Today's new build is available for PC and has the version number of 14931. In her blog post, Windows Insider head Dona Sarkar mentions the previously announced new app updates for Skype Preview, Maps and today's Feedback Hub. There's also one more interested new feature:

We now have native support for USB Audio 2.0 devices with an inbox class driver! This is an early version of the driver that does not have all features enabled, for e.g.: only playback (render) is supported with this version. Recording (capture) support is scheduled to arrive in later iterations. We encourage you to play with the driver and let us know what you think (using the Feedback app).

PC users who use third party drivers for your USB Audio 2.0 device can switch over to Microsoft's early drivers (opens in new tab) with a workaround.

There are a couple of PC fixes in this build:

  • We fixed the issue causing people to experience a black screen when signing out and switching to another user account and unable to log in to that account.
  • We fixed the issue causing the built-in Windows 10 apps such as Calculator, Alarms & Clock, and Voice Recorder to not work after updating to a new build.

There's also a few know issues:

  • While using Narrator and Groove Music, if you navigate to the progress bar while a song is playing then Narrator will continually speak the progress of the song e.g. update with the current time of the progress bar every second. The result is you will be unable to listen to the song or hear any other control you navigate to.
  • Oracle VM VirtualBox will crash on launch after upgrading to this build.
  • components 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 the right optional component and click ok. After a reboot, the optional component will be enabled again.
  • For keyboard users, using tab to navigate the Settings app will not work in this build. The arrow keys should work as a temporary workaround.
  • Tencent apps and games will cause your PC to bugcheck (bluescreen).
Zac Bowden
Zac Bowden

Zac Bowden is a Senior Editor at Windows Central. Bringing you exclusive coverage into the world of Windows 10 on PCs, tablets, phones, and more. Also an avid collector of rare Microsoft prototype devices! Keep in touch on Twitter: @zacbowden.

24 Comments
  • Hopefully mobile to follow.
  • It won't, they're waiting to fix some bugs bofore they release a new mobile build.
  • Not this week....
  • On the fast ring Skype Preview build, where is the option to set Skype as the default SMS app? Is there somewhere in settings you can set it?
  • Settings - system - messaging
    Scroll all the way down to choose default messaging app
  • Maybe this will allow users to record audio on their phones using a USB mic eventually. If so, it'll be a welcome change.
  • Doesn't this work on some phones? It's not a microphone only, but a USB headset works for recording voice, skype calls etc. when plugged into the Microsoft Display dock for sure - It was one of the first things I tried back at the 950 release when I was giving Continuum a go. I assume it would work with a USB-C to USB adapter too directly into the phone - This would only work on phones that support it, which I think are those with USB OTG like the 950 range
  • only phones that came preinstalled with Windows 10 Mobile have OTG support
  • Ah, well those phones should generally support USB Microphones already. Works well on mine. I have a Turtlebeach headset which uses a USB soundcard type device so I'll try that connected to my phone and see if it works - I know a standard office headset or office Microphone work with my 950 when i tried it.
  • Anyone else having serious battery issues on these latest Insider Previews on a Surface Pro 4? Love being on the new wave, hate that I have to be plugged in all the time :). Though, I do know that this is a side-effect of being on the new wave ;)
  • I was just reading about the new Bluetooth LE MIDI and other MIDI enhancements for Win10 Anniversary Update, and now this. Great news for musicians. I hope the pro audio companies start releasing support apps for windows as they do with Android and IOS.
  • I'm going to wait till tommorow
  • I was sad to see this not available for mobile yet - they're waiting until they iron out the pin pad and sim card bugs. I want to try out some of the new app changes currently only for fast ring. The wait continues...
  • Just for a week
  • Why Microsoft killed Oracle VM Virtualbox?
  • Because it's a bug in this build.
  • its not on purpose.virtualization is complex. ms is updating the kernel, its bound to have an effect on something like virtualization applications.
  • MS better improve the overal W10 experience soon. This are not looking good out there: http://www.bbc.co.uk/news/technology-37431343
  • Yeah I Just seen that. Why in the world would you force a update on devices with millions of configurations? These idiots think it's a good idea to force driver updates.
  • Update is stuck at 22% on my Surface 3.
  • I also have problem - see below
  • On the Surface 3, the problem was with an SD card. Removing the card allowed the update to complete. I then was able to re-insert the SD - it worked fine.
  • MY PC was bang up-to-date until the last update (not the current one) then it wouldn't install the insider update so I tried with this update and same thing gets to end and won't do a final restart. Wiped Hard drive clean and reinstalled windows no problem but when I try to install latest insider all is ok until the final restart and bang the PC freezes. My Laptop and another pc updates no problem. anyone any ideas?
  • These Windows Updates from 14905, 14926 to 14931 have disabled the mobile phones drivers so that when connected to the PC, my phones (Lumia 640 XL running build 14926 and Tecno Android L8) won't show on the system or connect. The system showed that the drivers were unknown and were disabled. Who has a work around solution for me please?