Lumion 12 Is: Being Prevented From Contacting The License Server

If you use Norton, McAfee, or Bitdefender, you must manually add the Lumion installation folder to the "White List" or "Exclusions" list.

Ensure that Port 80 (HTTP) and Port 443 (HTTPS) are open, as these are required for license validation. 🌐 Step 3: Network and Proxy Settings If you use Norton, McAfee, or Bitdefender, you

Solving the "Lumion 12 is being prevented from contacting the license server" error typically requires fixing a block in your Windows Hosts file or adjusting your Firewall settings. Log in to your Lumion Account on their

Log in to your Lumion Account on their official website to ensure your seat is active. It is a common hurdle for users after

Open your Firewall settings and ensure Lumion.exe is allowed for both Inbound and Outbound rules.

This error occurs when the software cannot verify your subscription or license key with Lumion’s official servers. It is a common hurdle for users after an update, a change in network security, or a migration to a new workstation. 🛠️ Step 1: Check the Windows Hosts File