Moreover, Microsoft made some changes with its own services, files and applications, which may be already installed on your computer. For instance, Microsoft's new service pack is not compatible with the older versions of Windows like Windows XP, Windows Vista or Windows 7 Home Edition. The disadvantage of using Windows 7 service pack 1 (sp1) is that many technical experts believe that the new Microsoft operating system will still have many drawbacks and bugs in it. Another advantage of using this Windows update utility is that it will allow the user to make the most of the security features built into Windows 7, which includes the Windows firewall, a built-in antivirus program, anti spyware programs and other security enhancements. One is that SP1 is designed to fix various bugs and errors in the Windows 7 operating system, which makes the system run faster and more stable. There are several advantages of using this service pack 1. But later, users can also opt for using the service pack through the Windows Update application. This service pack was initially installed automatically by Windows 7 after the Windows setup process. SP1 has been developed by Microsoft to make it compatible with the latest Microsoft Windows operating systems. Windows 7 Service Pack 1 (SP1) is a free upgrade for the Windows operating system 7 which is also accessible for download via the Microsoft website.