I repeatedly fail the latest MS Security Essentials Upgrade. I was haing multiple failure issues, so a hunt led me to a note to install the Mr Fixit Tool called: Windows6.1-KB947821-v31-x64.msu and running this did help with a bunch of those MSE upgrades that failed previously on the latest upgrade attempt, but this latest problem, . I cannot pass successfully. What to do please? The problem is Security Essential Upgrade repeateedly 4.4.304.0 (KB2902885), and it fails with Code 8004FF84. On screen in Win Update, it says: Update for Microsoft Security Essentials - 4.4.304.0 (KB2902885). Please help. Thanks much, Peter.