Security Update for Windows Vista (KB978886)
A security issue has been identified that could allow an authenticated local attacker to compromise your system and gain control over it.
- A security issue has been identified that could allow an authenticated local attacker to compromise your system and gain control over it. You can help protect your system by installing this update from Microsoft. After you install this update, you may have to restart your system.
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 Service Pack 1, Windows Vista Service Pack 2
- 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.