Hello Windows Insiders, today we’re releasing Windows 10 Insider Preview Build 20152 to Windows Insiders in the Dev Channel (Fast ring).

You can check out our Windows Insider Program documentation here, including a list of all the new features and updates released in builds so far. Not seeing any of the features in this build? Check your Windows Insider Settings to make sure you’re on the Fast ring. Submit feedback here to let us know if things weren’t working the way you expected.

If you want a complete look at what build is in which Insider ring, head over to Flight Hub. Please note, there will be a slight delay between when a build is flighted and when Flight Hub is updated.

Fixes

We fixed an issue that could result in Notepad unexpectedly being removed after resetting your PC. If you were impacted by this, you can reinstall Notepad via Optional Features in Settings.

We fixed an issue where the “Windows needs space to continue” dialog might have told you to select Continue but no Continue button was displayed.

We fixed an issue that could result in the Windows Update icon unexpectedly not appearing in the notification area of the taskbar when an update was ready for reboot.

We fixed an issue that could result in an IME typing as if it was ON, when it was actually in OFF state, and tapping the IME mode indicator in the taskbar wouldn’t change the mode.

Known issues

We’re working on a fix for an issue causing some systems to crash with a HYPERVISOR_ERROR bugcheck.

We’re looking into reports of the update process hanging for extended periods of time when attempting to install a new build.

We’re aware of an issue where Notepad might fail to reopen files which were automatically saved during a PC restart (if that option is enabled in Settings). Documents can be recovered from %localappdata%\Notepad.

Some Insiders may experience a bugcheck and rollback when attempting to update to this build if an Xbox controller is connected to your device. You may see error code 0xc1900101 in Windows Update History. To work around the issue, disconnect or unpair the Xbox controller to successfully update. (Please note that reconnecting the controller after the update will result in a bugcheck.)

Starting with the last build, some games and applications may crash at launch or fail to install. We’ve identified the root cause and are working on a fix for a future flight.

We’re investigating reports of the screen becoming dimmer after upgrading to the previous build.

We’re aware of an issue where Task Manager reports 0.00 GHz CPU usage in the Performance tab.

We’re working on a fix for an issue causing Reset this PC to always show the error “There was a problem resetting this PC” when launched from Settings. To work around the issue, use Advanced Startup (Windows RE) to start Reset this PC.