Lumion 12 Is Being Prevented From Contacting The License Server ⇒

Log in to your Lumion Account on their official website to ensure your seat is active.

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 must manually add the Lumion installation folder to the "White List" or "Exclusions" list. Log in to your Lumion Account on their

Look for any lines containing lumion or backup.lumiontech.net . those lines entirely. Save the file and restart Lumion. 🛡️ Step 2: Configure Windows Firewall

If you'd like to dive deeper into a specific area, I can help you: Look for any lines containing lumion or backup

Ensure you are actually running Lumion 12. If you recently upgraded to a newer version, the 12.0 license may have been deactivated.

If the technical fixes above do not work, the issue may be on the account side. 🛡️ Step 2: Configure Windows Firewall If you'd

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

Open Command Prompt as Admin and type ipconfig /flushdns , then hit Enter. This clears old connection data.

To rule out a router issue, connect your PC to a mobile hotspot. If Lumion works, the issue is your local Wi-Fi/Office network settings. ⚠️ Step 4: Verify Your License Status