In the last updates a few days back was KB968930 labelled as "Windows powershell and windows remote management" listed as OPTIONAL. click here
I didn't install this... it just had that "look" about it... anyway today tried to install and it fails. Error 80200053, which led me too MS id971058, reset windows update. click here
If I run this, then the update installs, but I am deeply suspicious. Anyone had problems with this update, and does it even apply to a home user. As always Google shows many have had "issues" with it over many months. It only appeared for me the other day on WU.
As I use Acronis I rolled back 24 hours, so am back at it still being an optional update.
I can run the "fix it" from the link, then it installs OK.