Windows Vista updates are distributed in service packs. Service packs help keep Windows Vista current, and they can extend and update the functionality of your computer. This article describes three step-by-step methods that you can use to obtain the latest service pack for Windows Vista.
However, before you select the method that you want to use, make sure that the following conditions are true:

  • Windows Vista Service Pack 2 (SP2) (the latest service pack) is not already installed on your computer.
    Click here to check whether the latest Windows Vista service pack is installed. If you see a reference to Windows Vista SP2 in the Operating System section, you successfully installed the service pack.
  • You are logged on to your computer by using a user account that is a computer administrator.
    Click here and follow step 2 on the popup page to check whether you are logged on with an administrator account.
  • The computer on which you want to install the service pack is connected to the Internet.

Methods to download the latest service pack

Important: Windows Update may not offer the latest Windows Vista service pack to some users. This issue can occur for several reasons. For a full list of causes and resolutions, click the following article number to view the article in the Microsoft Knowledge Base:

948343 Windows Vista and Windows Server 2008 service packs are not available for installation through Windows Update

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