I just installed Norton 360 on this (new) machine, which had Malwarebytes pre-installed. I got the incompatability message from Norton, came to this forum by way of google, and started following the instructions for getting Norton Security to allow Malwarebytes. With a bit of exploring, I found that Norton 360 does allow you to set exclusions. Open 360, go to Settings. then Firewall, then Program Rules, and you can then add files. I couldn't figure out to add a folder, but after reading more in this forum I just added the .exe files (mbam, mbamgui, and mbamservice). So far so good. Good information in this forum - it's the way the net should work.