Rule "Default block EPMAP" blocked (78, 152, 198, 40), port dcom(135), inbound tcp connection

I am trying to download a mini-app for an online game I play. My first reaction was if Norton is blocking this program it might be some kind of Malware so I am not installing this program.

 

? If this is a program from a known and supposedly friendly source, is it ok to install this program?