@bjm_ Very sorry, i obviously missed your reply/question some time back. I have no answer regarding how many real time AV type programs one can use at one time, were you being facetious? LOL The one thing i have learned is that different OS’s, and different computers, depending on their age, maintenance, and the number of programs/Apps loaded will respond differently. Having spent much time on the MBAM forums, it seems to me that barring a malware or virus problem, a great many people, like myself have no issues with NIS and MBAM running together in real time. Given that one only sees the problems, which are really a small percentage of the many millions of users of both programs, my take is that it is generally not an issue.