I don't have much experience with Vista because I changed my laptop from Vista to XP a long time ago. But I am thinking - did you try to install it manually? I went to a Vista forum and they said that error code means that a network adapter at the server has failed. Another person said to make sure the Windows Module Installer Service is turned on. Hope someone else has a more intelligent idea, I have a cold and cannot think good today. Trudy  --- Inge <pshebnicki@xxxxxxxxx> schrieb am Mi, 14.10.2009: Von: Inge <pshebnicki@xxxxxxxxx> Betreff: [pchelpers] Update did not instal An: pchelpers@xxxxxxxxxxxxx Datum: Mittwoch, 14. Oktober 2009, 11:13 I have a problem and I wonder whether someone can help me. This morning Microsoft downloaded quite a few updates. One of them did not install. It is the one below: --------------------------------- Microsoft .NET Framework 1.1 Service Pack 1 Security Update for Windows 2000, Windows XP, Windows Vista, Windows Server 2008, Windows 7, and Windows Server 2008 R2 (KB953297) Installation date: â??14/â??10/â??2009 1:17 PM Installation status: Failed Error details: Code 643 Update type: Important A security issue has been identified that could allow an unauthenticated remote 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. -------------------- As you can see, the installation failed. I cannot find what code 643 is all about and what I can do to instal this update. Can someone help me please. Frustrated in Niagara, Inge -- -------list-services-below----------- Regards, John Durham (list moderator) <http://modecideas.com/contact.html?sig> Freelists login at //www.freelists.org/cgi-bin/lsg2.cgi List archives at //www.freelists.org/archives/pchelpers PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Latest news live feeds at http://modecideas.com/indexhomenews.htm?sig Good advice is like good paint- it only works if applied. -- -------list-services-below----------- Regards, John Durham (list moderator) <http://modecideas.com/contact.html?sig> Freelists login at //www.freelists.org/cgi-bin/lsg2.cgi List archives at //www.freelists.org/archives/pchelpers PC-HELPERS list subscribe/unsub at http://modecideas.com/discuss.htm?sig Latest news live feeds at http://modecideas.com/indexhomenews.htm?sig Good advice is like good paint- it only works if applied.