Windows Vista Service Pack 1 Windows Update Installation

The Windows Update installation download can vary from approximately 65 MB to 430 MB (depending on what updates are already installed on the computer).

Notes:

  • The following prerequisite updates must be installed before Service Pack 1 is an available item on Windows Update:

    • KB935509 This update is only required on Windows Vista Enterprise and Windows Vista Ultimate editions (which have Bitlocker capabilities). This update is required prior to installing KB938371, the second prerequisite update and is required to prevent potential loss of data on Bitlocker encrypted systems during updating.
    • KB938371 This update consists of fixes for several components (including the TrustedInstaller), increases the success rate for installing the service pack and enables the service pack to be uninstalled successfully.
    • KB937287 This is an update to the "Servicing Stack" or the Windows Vista component installer technologies built into Windows Vista. This update enables the built-in installer to properly and successfully install the service pack.

  • SP1 requires a minimum of 5 GB free disk space on the Windows partition but 7 GB is recommended.
  • The entire installation process typically takes over 1 hour to complete.
  • Administrator privileges are required to install Service Pack 1.
  • Mobile computers must be connected to AC power before proceeding with the SP1 installation

To install the Microsoft® Windows Vista™ Service Pack 1 Windows Update installation, follow these steps:

  1. From the Windows Vista default Start menu, in the Start Search field, type: Windows Update and then press the ENTER key.

  2. In the Windows Update window, click View available updates.
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  3. In the Choose the updates you want to install dialog box select Windows Vista Service Pack 1 and then click Install.
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  4. In the User Account Control dialog box, click Continue.

  5. Service pack is downloaded. The download size varies depending on the number of updates already installed on the computer.
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  6. In the Welcome to Windows Vista Service Pack 1 dialog box, click Next.
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  7. In the Please read the license terms dialog box, select the I accept the license terms check box, and then click Next.
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  8. In the Install Windows Vista Service Pack 1 dialog box, click Install.
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  9. The Windows Vista Service Pack 1 installation begins.
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  10. In the Windows Update window, click Restart now.
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  11. The Installing Service Pack: Stage 1 of 3 window appears.
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  12. The Installing Service Pack: Stage 2 of 3 window appears.
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  13. The computer restarts.

  14. The Installing Service Pack: Stage 3 of 3 window appears.
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  15. The Welcome window appears.
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  16. Installation is complete.