According to Thurrott, Microsoft has released a Windows 10 update that is problematic – specifically KB3194496. Several users are reporting that their computers are going into a restart loop.
“The update that is causing the problem, KB3194496, is not installing correctly for users. The update, when it does fail, is causing some machines to restart, often multiple times, as Windows 10 attempts to remove the failed update. Worse, after a restart, the file will attempt to install again resulting in the loop of failed install, reboot, re-install and failure again.”
Consider yourselves warned.