I've had this system running perfectly with XP Pro SP2 for quite awhile with MS Office 2003 and NAV 2005 installed with no problems. A few days ago I installed MS Contact Manager and started getting the "Norton-AntiVirus-2005-does-not-support-the-repair-feature" message every time I opened MS Outlook. I tried the registry editing solution, however the shortcut was exactly where it was supposed to be and was never moved. I read and read about all of the solutions and hated the thought of uninstalling and reinstalling NAV, especially after reading the horror stories about problems created by attempting that. I also didn't like the idea of disabling MS Office protection, that Norton had the nerve to include as a solution. A new reinstall of the OS was out of the question. Then I found probably the most simple solution and decided to give it a try... I took about a minute to fix and solved my problem. Hope this helps anyone with the same problem. To repair the problem try going to (the location and name will vary depending on what norton product you are using): c:\program files\norton antivirus\quarantine Check to see if the quarantine folder contains the following 2 folders (Portal and Incoming), if not create new folders within the quarantine folder as follows: c:\program files\norton antivirus\quarantine\portal and c:\program files\norton antivirus\quarantine\incoming That's it, once the new folders were created everything is fine again... I didn't even have to reboot! Hope this helps others before they try to do any of the other exhaustive fixes I've seen. It may not be the solution for everyone, but fixed my problem in a jiffy. Good Luck!