Download Windows Vista Service Pack 1 (SP1) Release Candidate

The Windows Vista Service Pack 1 Release Candidate (RC) is now available to the public. In addition to previously released updates, SP1 contains changes focused on addressing specific reliability and performance issues, supporting new types of hardware, and adding support for several new technologies. SP1 also addresses some management, deployment, and support challenges.

Things to know before you download
If you have a prior version of SP1 beta installed, you must uninstall it prior to installing SP1 RC.
Microsoft does not recommend installing this software on primary or mission critical systems.
Windows Vista SP1 Release Candidate is time-limited software.
Support is through self-help and peer support via the Windows Vista SP1 forum and FAQ page.
Additional information about the above items and others. Be sure to review.

Get Windows Vista Service Pack 1 RC (Update for existing Windows Vista users)
There are 3 different ways to access the Windows Vista SP1 RC depending on the unique business needs of individual users and their organizations.
Windows Update ExperienceThe recommended method for installing Windows Vista SP1 RC on an individual computer. Note: installing the release candidate of SP1 via Windows Update requires a number of additional steps that will not be necessary when the final SP1 is released.
Windows Vista SP1 stand-alone packagesThese packages support SP1 RC installations on all versions of Windows Vista with one, five, or a combination of the 36 Windows Vista languages installed.
TechNet Subscribers: Get Windows Vista SP1 Release CandidateWindows Vista SP1 Release Candidate is now available to TechNet Subscribers on Technet Subscriber downloads.

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