Lumion 12 Is Being Prevented From Contacting The License Server -

Windows 10 / 11 (64‑bit), Lumion 12.x (any update version), both single‑user (standalone) and network (floating) license types. 2. Root Cause Analysis Lumion 12 uses online license verification. The error indicates that outbound network requests to Act‑3D’s licensing servers are being blocked. Possible causes include:

Here’s a technical write‑up for the issue “Lumion 12 is being prevented from contacting the license server.” 1. Issue Summary Error Message: “Lumion 12 is being prevented from contacting the license server.” Windows 10 / 11 (64‑bit), Lumion 12

Lumion 12 cannot validate the license, preventing normal operation. The software may start in trial mode or refuse to run entirely. Windows 10 / 11 (64‑bit)

Run these tests from the affected machine: Lumion 12.x (any update version)