Updating windows from microsoft
Windows Update, a service offered by Microsoft, provides updates for Windows components.It can be replaced with Microsoft Update, an expanded version of the service which provides for other Microsoft software as well, such as Microsoft Office, Windows Live Essentials and Microsoft Expression Studio.While Microsoft mostly publishes security and stability updates on the second Tuesday of each month (Microsoft Office updates that are not security-related usually arrive a week earlier), there are times when critical fixes, stability updates and Service Packs are released outside the schedule.
Clean installations without Service Pack 1 might fail to start BITS and Windows Update services.
Below are steps on how to perform these updates, as well as additional recommendations to help update your computer.
If you are running Microsoft Windows 98 or later, at least some updates should be available for your computer.
However, the rollup is not technically a service pack itself.
It's completely optional -- if you've been keeping your Windows 7 machine up-to-date, you won't need it.