Yesterday, Microsoft accidentally released Windows 10 build 16212 for PC and Mobile devices from the internal branches. According to the company, this happened because an inadvertent deployment to the engineering system that controls which builds/which rings to push out to insiders. The team was quick to revert the deployment and stopped these builds from going out to more people.
Meanwhile, the build was rolled out every ring including Fast, Slow, Release Preview ring and Current Branch phones and PCs. Windows 10 users with 32-bit version of the OS will see a new update 15063.2.rs2_release_svc_d.170531-1743 (UUP-CTv2) in their updates.
Microsoft warned users that if they install this build, their devices will be stuck in a reboot loop and the only way to recover is to use the Windows Device Recovery Tool and re-flash.
We have collected some fixes for those users facing issues with these builds.
The new Windows 10 Mobile build is now available in every branch. Again, do not install this one, if you do, your phone will get into reboot loop.
Fix 1 – If your phone is done preparing to install 16212 and is waiting for a reboot. Set your date forward 40 years and then shut down your phone. This hack works for some users.
Fix 2 – If your device has downloaded this build but has not installed the build (you see either an “Install” or “Restart now” button under Phone update) – you will have to do a device reset via Settings > System > About (Do a backup via Settings > Update & security > Backup FIRST) and then check your Windows Insider Program settings to ensure you’re on the right ring.
Fix 3 – If you already installed on your phone and you’re stuck with reboot look, follow steps posted below.
Restart / Reboot
If your device ends up in an undesired state, completing a restart is the first step to try. Often time unexpected issues can be resolved by simply rebooting the device. This can be done one of three ways:
A restart does not erase any user data, files, photos, etc. Completing this action reboots the phone and can clear up device hangs, app crashes, failures to open/launch apps, and so forth. There are no changes made to the OS via this action.
Hard Reset / Factory Reset
There are two primary methods to complete this type of reset:
Power the device off, now press the Power key briefly to boot the device. Immediately press and hold the Volume Down key. When an exclamation point (!) appears on the screen, release Volume Down
Press the following keys in this order:
The device will then initiate the full reset process
Again, remember that using this type of reset will erase all data from the device. Please ensure that you have a device backup available if you wish to restore your user data after the reset.
Fix 4 – To recover your phone using the Windows Device Recovery Tool, complete the following steps:
o If your device is detected appropriately, click the phone option as displayed.
o If your device is not detected, choose “My device was not detected” and follow the appropriate on-screen prompts.
§ If using this option and the WDRT tool seems to “hang”, disconnect the phone from the USB cable, wait ~10 seconds, and reconnect.
§ If disconnecting the device does not work, you may need to reboot your PC to re-enumerate the connected peripherals.
Again, if Windows 10 build 16212 for PC and Mobile build 16212.1001 pop up on your devices, do not install them.