Hi, 

TheMSN paid subscription provides you both web-root and MacAfee free of cost whichyou can download anytime by going to membercenter.msn.com. If you have MacAfeeinstalled on your computer then you don’t have to worry about it, as itprotects your computer from all types of viruses and malwares. Since thewebroot has also been updated as an antivirus there will be a conflict at timesif you install both on the same computer, hence requesting you to use any oneof the antivirus program on your computer.

Thanksand regards

Mubarak