Thank you, I've followed the instructions in your email to re-download Vista SP2 & received the following message : SP2 is already installed. Unfortunately, the problem still persists, i.e. Windows Vista Security Updates failing to install. I need to remedy the following issues: "Default Windows update data locations have changed: The location where Windows Update stores data has changed & must be repaired. Repair default Windows update locations: Change Windows update locations to Windows Default settings" Does any member know how I can do this? Many thanks, Betty ----- Original Message ----- From: Ron & Rosemary M - U3A To: Comp Users GroupU3A Sent: Sunday, August 19, 2012 5:16 PM Subject: [u3aavcuss] Problems with Vista Dear Betty I think the answer to your problem may well be that on 12 July 2011 Microsoft have stopped issuing security updates for Vista Service Pack 1. See http://windows.microsoft.com/en-US/windows/help/end-support You say that you have Service pack 2 but Windows might not be recognising this because of your problems. Why not try to download Service Pack 2 again using the link from this page. This should load all the updates released since SP1 and presumably write the files into the correct places. For the benefit of other members, you will see that support for Windows XP ends 8 April 2014 and for XP Service pack 2 ended on 13 July 2010 XP Service Pack 3 should now have been installed and can be accessed from this link. I have been sorely tempted to update Vista on my laptop to Windows 7 which I use on my PC as Windows 7 is certainly far superior but I haven't convinced myself yet as I do not use the laptop often. The cheapest Windows 7 upgrade I have found is from Software4Students at £50 but you do need to convince them that you have some tenuous link to the academic world such as a grand-child at school! Maybe I should bite the bullet for once. Bye Ron M :-) No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2197 / Virus Database: 2437/5209 - Release Date: 08/19/12