Lumion 12 Is Being Prevented From Contacting The License Server -

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

Ensure you aren't logged into the same license on a different machine. 🚀 Pro-Tip for Fast Troubleshooting

If you are using a VPN, disconnect it and try launching the software again. To rule out a router issue, connect your

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

The most frequent cause is an entry in the Windows Hosts file that explicitly blocks Lumion’s web address. Open the and type Notepad . Right-click Notepad and select Run as Administrator . In Notepad, go to File > Open . Navigate to: C:\Windows\System32\drivers\etc 🚀 Pro-Tip for Fast Troubleshooting If you are

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

Look for any lines containing lumion or backup.lumiontech.net . those lines entirely. Save the file and restart Lumion. 🛡️ Step 2: Configure Windows Firewall The most frequent cause is an entry in

to automatically clean your Hosts file. Find the specific IP addresses Lumion uses for its servers.

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

If the technical fixes above do not work, the issue may be on the account side.