Windows 10 'servicing stack' update cripples some PCs

Some users have reported that one of this week's Windows 10 updates crippled their PCs, according to a thread on Reddit.
They fingered the KB4013418 update as the most likely culprit. That update was marked simply as "Update for Windows 10 Version 1607" in Windows Update, and in the accompanying support document, tagged as a "servicing stack update."[ Related: Fix Windows 10 problems with these free Microsoft tools ]
In Microsoft's parlance, a servicing stack consists of the executable file and