Failure To Boot
When we saw a May 2 post on TechARP warning of boot failures after installing the IE patch, known officially as security update 2929437, we tried and successfully reproduced the problem. As in the post, a laptop running Windows 7 blue-screened immediately after installing the patch. It booted fine after that, and has behaved normally since. An update to a laptop running Windows 8 Pro worked normally. But our advice is always to back up all data or set a restore point before applying any patch.