Most of these updates are fixes for tiny problems you won't ever notice. My favorite is one titled "Layout of Cambria font is different in Word documents when the text metric changes in Windows 8.1 or Windows 8." I can't tell you how many times that exact problem has ruined my whole day.
Other ones that might be more helpful are "The InputPersonalization.exe process crashes in Windows," "Narrator does not stop reading when you press Ctrl key in Windows," or "UHS-3 cards cannot be detected in Windows on Surface devices." However, even then I doubt many of you are dealing with those.
To see which of these updates are available for your computer, go to the Windows Update area. In Windows 7 and Vista, go to Start>>Control Panel.
In Windows 8, using a mouse, right-click in the lower right corner of the screen and choose Control Panel. If you're using a touch screen, swipe from the right of the screen and tap Settings>>Control Panel.
Once you're in Control Panel, click "System and Security" and then under Windows Update click "Check for updates." On the update screen, click the link that says there are optional updates available. Then you can select the ones you want to install, or hide the ones you don't care about.
To find out what an update does in Windows 7 and Vista, double-click on it and under More Info open the Microsoft Knowledge Base article. In Windows 8 you can click the "Details" link and then the "More Info" link.
If you haven't been noticing any problems with your computer, then you don't need to install any of them. However, even if you don't need them, you can install them without hurting Windows. So it's up to you what you want to do.
Did this update fix your dreaded Cambria formatting problem? Let me know in the comments below.