Update for Windows Vista for x64-based Systems (KB949939)
Install this update to enable future updates to install successfully on all editions of Windows Vista.
- Install this update to enable future updates to install successfully on all editions of Windows Vista. This update may be required before selected future updates can be installed. After you install this item, you may have to restart your computer. Once you have installed this item, it cannot be removed.
This update is provided to you and licensed under the Windows Vista License Terms.
This download is no longer available on microsoft.com. The downloads below are archives provided by the Internet Archive Wayback Machine from the Microsoft Download Center prior to August 2020.
Operating Systems: Windows Vista Business 64-bit edition, Windows Vista Enterprise 64-bit edition, Windows Vista Home Basic 64-bit edition, Windows Vista Home Premium 64-bit edition, Windows Vista Ultimate 64-bit edition
- To start the download, click the Download button and then do one of the following, or select another language from Change Language and then click Change.
- Click Run to start the installation immediately.
- Click Save to copy the download to your computer for installation at a later time.