text: Clear your temporary internet files, clear all the temporary areas on your PC, you may need to show all files in windows explorer (Tools, Folder OPtions, View - Show hidden files AND untick Hide System Files) C:&#92;temp C:&#92;windows&#92;temp c:&#92;Documents and settings&#92;usernamexx&#92;Local settings&#92;Temp C:&#92;Program Files&#92;WindowsUpdate (all files in these locations can be safely deleted) and try again. \n\nIf it still fails then post again with specific updates that fail. \n\nI have seen a number of PCs that have had a problem with the Microsoft Installer 3.1 update, all other updates then fail. If that is the case uninstall the Installer Update (Add/Remove Programs in the Control Panel) and download it manually.