Windows 10 Build 15031 (10.0.15031.1000) info

Update: Windows 10 build 15031 for PC is now available.

New in Windows Windows 10 build 15031

Do more at once with the new Compact Overlay window: Windows 10 build 15031 introducing a new compact overlay mode for UWA app developers. When an app window enters compact overlay mode it’ll be shown above other windows so it won’t get blocked. The best part is that compact overlay windows work just like normal windows in all other ways so app developers can tailor the experience with what they already know. Updates to the Movies & TV app and Skype Preview app will take advantage of compact overlay windows in the near future!

Picture-in-Picture in Windows 10.

Dynamic Lock: Dynamic Lock automatically locks your Windows 10 PC when you’re not around based the proximity of a Bluetooth-paired phone. If your Bluetooth-paired phone is not found near your PC, Windows turns off the screen and locks the PC after 30 seconds. To enable Dynamic Lock, make sure your phone is paired to your PC via Bluetooth and go to Settings > Accounts > Sign-in options and toggle Dynamic lock to “on”.

Dynamic Lock

NOTE: See known issues below regarding a bug preventing PCs on this build from successfully pairing devices via Bluetooth.  

New Share icon: Windows 10 build 15031 introducing a new share icon. Apps that used the “share” font glyph in Segoe MDL2 assets should get the change automatically.

Windows Game Bar improved full-screen support: In this build, insider team added support for 52 additional games in full-screen mode with Windows game bar. As always, just hit WIN + G to invoke Game Bar to capture a recording or screenshot.

Fixes for Windows 10 build 15031

  • Windows 10 build 15031 fixed the issue causing Tencent apps and games to crash or work incorrectly.
  • Windows 10 build 15031 updated OOBE so that if there’s no detected audio output device, for example with VMs, it now skips Cortana’s introduction.
  • [GAMING] We fixed the issue causing popular games may experience crashes or black screens when trying to load due to a platform issue.
  • [GAMING] We fixed the issue where Game Mode is enabled system wide by default, however, the ON/OFF toggle in Settings will incorrectly show it as being OFF until the user manually toggles the Setting to ON which will cause it to update and accurately display the status of Game Mode system wide.
  • Windows 10 build 15031 fixed an issue where the night light quick action was unexpectedly disabled in the last Insider flight.
  • Windows 10 build 15031 fixed an issue resulting in audio going quiet each time the Start menu is opened after a SpeechRuntime.exe crash.
  • Dragging apps from the all apps list to pin on Start’s tile grid will now work. We also fixed an issue on recent builds where some tiles might unexpectedly appear blank and with a name starting with “P~…” after upgrading.
  • Windows 10 build 15031 fixed an issue where Win + Shift + S wouldn’t work to capture a region of the screen if the Snipping Tool was already running. We also fixed an issue where taking a snip with the Snipping Tool would fail on 4k monitors when 60-80% was selected.
  • Windows 10 build 15031 fixed an issue resulting in “Fn”+”Pause/Break” key not working to pause the checking progress when running chkdsk.
  • Windows 10 build 15031 fixed an issue where resizing windows with a pen would be unexpectedly slow. We also fixed an issue where resizing a window across monitors with different DPIs could be unpredictable.
  • fixed an issue where the Windows Ink highlight preview wouldn’t be visible in Web Notes when Microsoft Edge was using dark theme.
  • Windows 10 build 15031 improved gesture recognition for 3 finger swipes on precision touchpads.
  • fixed an issue where a number of files with the name GLOB(0xXXXXXX) could be unexpectedly found in the system root directory after upgrading.
  • fixed an issue where you couldn’t rename disk volumes via File Explorer in recent flights.
  • fixed an issue where rapidly tapping a button to bring up the new Share experience, for example in Microsoft Edge, could result in the Share UI not coming up again until the device had been rebooted.
  • Windows 10 build 15031 fixed an issue resulting the lists of thumbnails in Photos and Groove Music visibly shifting up when the app resumed.
  • fixed an issue where the Themes Settings page would blink when a theme was deleted.
  • Windows 10 build 15031 updated the help string on each page of Settings to be a bit more succinct.
  • Windows 10 build 15031 fixed an issue resulting in not being able to type ę on the Polish keyboard into the Settings search box.
  • Windows 10 build 15031 fixed an issue where Cortana Background Task Host might have ended up using an unexpectedly large amount of CPU in recent flights. We also shorted the two factor authentication notification from Cortana so that it won’t be truncated.
  • Windows 10 build 15031 fixed an issue where the UI to input credentials wouldn’t have keyboard focus after initiating a remote connection to another PC.
  • Windows 10 build 15031 improved reliability when handling malformed Gifs in XAML-based apps.
  • The icons should now be shown as expected instead of squares under Settings > Gaming.

Known issues for PC

  • While we fixed the primary bug causing this issue, some Windows Insiders may still hit nonstop exceptions in the Spectrum.exe service causing their PC to lose audio, disk I/O usage to become very high, and apps like Microsoft Edge to become unresponsive when doing certain actions such as opening Settings. As a workaround to get out of this state, STOP the Spectrum.exe service and delete C:\ProgramData\Microsoft\Spectrum\PersistedSpatialAnchors and reboot.
  • Going to Settings > Devices will crash the Settings app. You will be unable to pair a Bluetooth device. Bluetooth quick actions from Action Center also does not work.
  • You will not be able to launch the Connect UX via Action Center, Win + K, or Settings (it will crash upon launch). This will impact wireless projection scenarios.
  • [GAMING] Some popular games might minimize to the taskbar when launched. You can click on the game on the taskbar to get the game back.
  • [GAMING] Certain hardware configurations may cause the broadcast live review window in the Game bar to flash Green while you are Broadcasting. This does not affect the quality of your broadcast and is only visible to the Broadcaster.
  • Microsoft Edge F12 tools may intermittently crash, hang, and fail to accept inputs.
  • Microsoft Edge’s “Inspect Element” and “View Source” options don’t correctly launch to the DOM Explorer and Debugger, respectively.
  • Under Settings > Update & security > Windows Update you might see the text “Some Settings are managed by your organization” even though your PC isn’t being managed by an organization. This is a bug caused by an updated flight configuration setting for Insider Preview builds and does not mean your PC is being managed by anyone.
  • On some PCs, audio stops working sporadically with ‘device in use’ error”. We are investigating. Restarting the audio service may fix things for a bit.
  • The Action Center may sometimes appear blank and transparent without color. If you encounter this, try moving the taskbar to a different location on screen.
  • The icon for Windows Insider Program under Settings > Update & security is shown as a square.

Original Story: Microsoft is now testing Windows 10 insider build 15031 for PC and mobile build 10.0.15031.1000 internally. The new Windows 10 Creators Update Insider build 15031 is compiled on February 4. Insider team may release this build for Fast Ring members this week.

Microsoft is also testing Windows 10 cumulative update build 14393.805 for PC and mobile build 10.0.14393.805. Recently, Windows insider team also released Update KB3216755 build 14393.726 for PC and Mobile build 10.0.14393.726 for Release Preview Ring members. Windows 10 build 15025 ISO images are now available for download. You can download ISO from here.

Recently, Microsoft rolled out new Windows 10 Insider Preview PC build 15025 and Mobile build 10.0.15025.1001 for Fast Ring members. However, If you are facing issues with build 15025 like error 0xC1900401, build not yet available, download stuck at 0%, high CPU usage issue or other problems with the latest build, check out workaround here.

Microsoft is expected to release Windows 10 Creators Update in April. The next major update Redstone 3 and Redstone 4 will come later this year and next year respectively.