Moved to Security Center 9. Please can you give more information?
Please include the following information: What is your operating system, service pack and are you up to date with Microsoft update?
What McAfee products do you have? If your taskbar icon is like this:

- double-click to open SecurityCenter and then click "View Details" or "About" at the lower right of the new window. Post the details from each module.
First thing to check for that error is your system clock. Make sure it is accurate both time and date and timezone-wise.