I can't preclude that your older version is somewhat incompatible with the DAT updates or the McAfee servers. Actually, I had this problem when I used your version. The most current version is SecurityCenter 9.0 or 9.3 etc. I don't know if you can upgrade to this version, if you got it from Dell or certain other companies you may be stuck with this version. If you want to try a reinstall from your online account, don't forget to use MCPR and the other instructions for removal and installation that can be found somewhere on this forum.
Actually, you are posting under SecurityCenter 9.0. 2009. Why, if you have SecurityCenter 8.1 ? 🙂
Btw: I wouldn't use 'FIX', but reenable the system guards myself. You may have to set the warning to 'ignore' before you can do that. And don't forget to undo the 'ignore' afterwards. I have learnt that it's better not to use 'FIX', and deal with the problem yourself. (If you know what you're doing)