MirrorOp Receiver is a software application that turns your computer or display into a destination for screen mirroring. When you install the receiver on your Windows 7 PC, you can use a corresponding MirrorOp Sender on your phone, tablet, or another computer to stream your screen, video, and audio in real-time. Key features of the MirrorOp ecosystem typically include:

Select "Allow a program or feature through Windows Firewall."