Mushure mekuburitswa kweiyo vhezheni 2.0, Microsoft yakasiya vhezheni 3.0 uye yakaburitsa Microsoft Security Essentials 4.0. Chirongwa cheveruzhinji chebeta chakatanga musi waNovember 18, 2011, apo Microsoft yakatumira kukoka kune vangangove vatori vechikamu pasina kuzivisa nhamba yevhezheni. Yekutanga beta vhezheni yakaburitswa munaNovember 29, 2011, uye yekupedzisira kuvaka musi waApril 24, 2012. Microsoft yakazotanga chirongwa chekutanga-kuburitsa chinopa vanozvipira neyazvino beta vhezheni uye inogamuchira mhinduro. Mubvunzo: Ndeapi maficha eiyo pre-release chirongwa?
rinopa vazvipiri shanduro yazvino yebeta uye rinogamuchira mhinduro.