Microsoft accidentally released a new build of Windows 10 to Windows Insiders that you should probably avoid. The company released internal build 16212 for some PCs and Mobile devices to Windows Insiders. Build 16212 causes Windows 10 Mobile devices to enter a boot loop, requiring users to reset their device using the Windows Device Recovery Tool. Resetting your device will mean that you’ll have to get rid of all the files on your devices, and that’s something none of us probably want to do.
The build is believed to be available to Windows Insiders in the Fast, Slow, and Release Preview rings. However, we’re also hearing that the build is rolling out to some regular users who aren’t part of the Windows Insider program and that’s certainly quite worrying.
#WindowsInsiders: pls do not install any builds being offered til you hear from us with a blog post. If you have installed, reset with WDRT.
— Dona Sarkar (@donasarkar) June 1, 2017
If you’re a Windows Insider, DO NOT install build 16212 on your Mobile or PC. Remember, this is an internal build that was never supposed to get released to users — the PC build doesn’t seem to have any critical issues, but the Mobile build will simply brick your phone. If your device has already started downloading the build, simply disconnect from the internet to stop the download. And if the build is ready to be installed, try setting your device’s time to 2050 and that should cancel the build’s installation.