Zemax Opticstudio License Fixed Link Jun 2026

If you own an old "fixed" black or green USB dongle, it may still work, but you likely cannot upgrade to the latest software versions without a support contract (ZSupport).

Floating licenses require a dedicated license server. If the server crashes, your entire optical team stops working. A fixed license eliminates the "single point of failure." Even if the network goes down, the engineer using the fixed license continues designing. zemax opticstudio license fixed

Are you trying to move a license from an to a new one? Do you have a USB dongle or a softkey ? If you own an old "fixed" black or