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Click the Windows Start menu, type , right-click it, and select Run as administrator .
Modern AV software like Bitdefender, Malwarebytes, or Avast use "Behavioral Analysis" to stop software from "phoning home," mistaking license checks for malware.
If you are working from a corporate office, a university campus, or utilizing a virtual private network (VPN), your data is likely passing through strict security filters. Click the Windows Start menu, type , right-click
Save the file (ensure it does not have a .txt extension) and restart Lumion. 3. Configure Antivirus and Firewall Exclusions
and register their Perpetual License Key there to ensure continued connectivity. Lumion Community forum Lumion Website to create an account. Save the file (ensure it does not have a
When Lumion 12 cannot contact its license server, it is typically due to local security settings or network interference blocking the necessary handshake. Immediate Troubleshooting Steps To restore the connection, try these steps in order: Add Antivirus & Firewall Exclusions
Security software often flags Lumion’s license communication as suspicious. Antivirus Exclusions Lumion Community forum Lumion Website to create an account
To immediately verify if security software is the culprit, temporarily disable your Antivirus (e.g., Avast, Bitdefender, Norton) and the Windows Firewall.
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