Don’t push that update through! Microsoft customers — particularly Windows Insiders — running x86 architecture PCs and phones beware: there’s a dev branch build (16212) that is bound to cause problems if you allow it onto your system.
Users who may have already allowed the update to start should immediately put computers and phones in airplane mode or disable the download by turning Wi-Fi off.
Hassan also commented that the build contains “…broken things, aka things you shouldn’t install even if you’re an insider.”
While it is unclear whether there’s a fix or when Microsoft will pull the update, it appears as though updating your system to build 16212 will result in potentially catastrophic damage to your operating system. This only effects x86 computers and phones.
Microsoft insiders aren’t strangers to wonky builds, but this particular one appears to have been released on accident.
Source: The Next Web