Abstract: A skyrise window panel installation assembly including an heavy duty cable structured to extend down a side of a skyrise and be securely anchored at a point above an installation location. The assembly further includes a winch assembly having a rigid and strong drive frame at which the cable is received and securely engaged for secure guided, driven interconnection, selectively up and down a length of the cable, thereby providing for the effective positioning of the winch assembly in a desired position relative to the window panel installation location. Secured to the drive frame is a primary operator chair wherein a primary operator sits in confronting relation to the side of the skyrise in order to effectively and precisely position the winch assembly in the desired position. Extending from the drive frame is a connection bracket, to which a suction assembly is secured. The suction assembly includes a mount frame and is disposed in a generally vertically disposed orientation along the side of the skyrise.