Look on the bright side; at least "not booting" is better than "deleting all your files": https://news.ycombinator.com/item?id=18189139

Also, every time MS fucks up an update, more users will become persuaded to turn them off completely. It's a massive amount of trust and valuable user time lost. They keep harping about how much cyberattacks cost, but are clearly silent on the cost of periodically breaking everyone's PCs in various ways.