SP1 contains changes focused on addressing specific reliability and performance issues, supporting new types of hardware, and adding support for several emerging standards. Windows Vista SP1 also addresses some management, deployment, and support challenges.
Download Vista SP1 for x86
Download Vista SP1 for x64
For an overview of significant changes and improvements in SP1, see http://go.microsoft.com/fwlink/?LinkId=107921
For a list of the hotfixes and security updates included in SP1, see http://go.microsoft.com/fwlink/?LinkId=107922
Before you install Windows Vista Service Pack 1
If you install Windows Vista and then install SP1 without first activating Windows Vista, you might not be able to uninstall the service pack.Either activate Windows Vista before you install SP1 or activate SP1 before you attempt to uninstall the service pack.
