Windows updating software for use with the website
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.
Windows Update clients normally download updates over an Internet connection, although Microsoft makes provision for installing updates on computers without an Internet connection and a range of alternative methods and programs also exist to install updates. Security updates or critical updates protect against vulnerabilities to malware and security exploits.
If you see an "Windows installer package" alert message, follow these steps to try to repair the software through the Windows Control Panel.
If the steps in these articles don't help you fix the issue, you might be able to find a solution through a search of the Microsoft support website.