Forum Options New Topic Gallery Categories All Knowledge General System SPICE FDTD BPM Grating Fiber Exchange Home › Forums › GENERAL › OptiSystem 12 OptiSystem 12 Ammar Qaffaf (joined April 2014) Participant How to get OptiSystem 12 working on Windows 8.1? Responses (1): Reply April 15, 2014 at 8:33 pm #10570 Ammar QaffafParticipant How to get OptiSystem 12 working on Windows 8.1? April 22, 2014 at 12:26 pm #10802 Tech SupportParticipant What exactly is the problem and which version of Windows 8.1 are you using? We have just tested it on Windows 8.1 pro and it seems to be fine. 1 Login You must be logged in to reply to this topic.