If you work on defense contracts, night-vision goggles, or satellite optics, your computer cannot connect to the internet. A "fixed" node-locked license lives entirely on a local drive. No phone-home telemetry. No cloud validation. This is mandatory for ITAR compliance.
Do not open OpticStudio first. Open the (Start Menu > Ansys Zemax > ZLM). zemax opticstudio license fixed
and run it. This reinstalls all licensing components and Windows drivers required for the software to detect your key. Install the Latest Release If you work on defense contracts, night-vision goggles,
It must be installed on the same computer where you run OpticStudio. If you work on defense contracts