I use it when asked to look at family or friends pcs, just to check if they are fully patched and up to date. As well as the window patches it also checks for updates/patches for many other software programmes and provides a link to the updates. It's also free for personal use.
If you don't want to load the software you can have an
Online Scan instead.
Mike
If you have to swallow a frog, try not to think about it. If you have to swallow two frogs, don't swallow the smaller one first.