Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Watanni goma sha shida bayan fitowar sigar 2.0, Microsoft ya tsallake sigar 3.0 kuma ya fito da Microsoft Security Essentials 4.0. An fara shirin beta na jama'a a ranar 18 ga Nuwamba, 2011, lokacin da Microsoft ta aika da gayyata ga masu halartar ba tare da sanar da lambar sigar ba. An fitar da sigar beta ta farko a ranar 29 ga Nuwamba, 2011, kuma an gama ginin a ranar 24 ga Afrilu, 2012. Daga baya Microsoft ya fara shirin pre-release wanda ke ba masu sa kai tare da sabon sigar beta kuma yana karɓar ra'ayoyi.  Tambaya: Mene ne fasalulluka na shirin pre-release?
yana ba masu sa kai tare da sabon sigar beta kuma yana karɓar ra'ayoyi.