Kindly post the Version details of McAfee Installed on your Machine. McAfee indicates this message when it is already Upto date and you try a manual Update.
Engine Version: 1798.0
Security Center: 12.8
Build : 12.8.908
Sorry..didn't mean to bother anyone with my problem
As Selvan will tell you I'm sure, you are up to date. To go 12 hours, 24 hours or even longer sometimes without an update is not unheard of.