What firewall are you using? For the life of me I could not get Poser 8 to play well with ZoneAlarm, no matter how much I tweaked the settings. I switched to Eset Internet Security and that solved the problem.

Poser 11 Pro, Windows 10

Auxiliary Apps: Blender 2.79, Vue Complete 2016, Genetica 4 Pro, Gliftex 11 Pro, CorelDraw Suite X6, Comic Life 2, Project Dogwaffle Howler 8, Stitch Witch