Lumion 12 Is Being Prevented From Contacting The License Server Jun 2026

Permanently add Lumion exclusions to your firewall and antivirus software to avoid repeated blocks.

When you launch Lumion 12, the software performs a silent handshake with Act-license (Lumion’s licensing partner). Here is the flow: Permanently add Lumion exclusions to your firewall and

If you are still seeing the error, go through this checklist: go through this checklist:

Permanently add Lumion exclusions to your firewall and antivirus software to avoid repeated blocks.

When you launch Lumion 12, the software performs a silent handshake with Act-license (Lumion’s licensing partner). Here is the flow:

If you are still seeing the error, go through this checklist: