What to do when Windows Update is not working correctly? What tools can I use to detect the cause of the malfunction problem? What does this numeric error code mean? These and other questions that you have been asking in the past are answered here (or at least you will know what to do next).
Microsoft Windows Server Update Service (WSUS) is free for everyone, but it lacks of some desirable features like send an e-mail to the administrator with the status of all computers on the WSUS server. This article is based on my PowerShell script to create this report.