Applies to all editions of Windows Vista. Which edition of Windows Vista am I using?
Windows Vista Service Pack 1 (SP1) includes many important updates that help improve the reliability, performance, and security of Windows Vista. For more information, see What’s included in Windows Vista Service Pack 1 (SP1). The recommended (and easiest) way to get SP1 is to turn on AUTOMATIC UPDATING in Windows Update in Control Panel, and wait for Windows Vista to notify you that SP1 is ready to install. You just need a few clicks to begin the installation and the rest of the process is automatic. You can also manually download SP1 from the Microsoft Download Center. To learn if SP1 is already installed • Click the Start button Picture of the Start button, right-click Computer, and then click Properties. If Service Pack 1 is listed in the Windows edition section, SP1 is already installed on your computer and you do not need to follow the instructions below. Before you begin Before you install SP1, do the following: • Back up important files. Because this is a significant update
