Hi all,
had major issue in installing the SSA_Setup. my old antivirus changed some settings and it locked me out of windows defender settings (win 10) the only course was to re install windows. I couldnt do that so after searching and trying different ways to get the app through windows defender was this link
https://icmizer.zendesk.com/hc/en-us/articles/360002688153-Getting-Your-security-settings-do-not-allow-this-application-to-be-installed-on-your-Computer-error-message
hopefully saving people time and effort here!