Lumion 12 Is Being Prevented From | Contacting The License Server |link|

Click . Ensure Windows does not append a .txt extension to the filename. 2. Configure Windows Defender Firewall

For organizations with specific network configurations, offer the ability to directly connect to the license server through a defined proxy or specific port.

Click the button at the top (requires admin rights). Scroll down the list to find Lumion .

Scroll down to "Exclusions" and click . Click Add an exclusion and select Folder . Scroll down to "Exclusions" and click

Click , then Allow another app , and browse to your Lumion.exe . Add Antivirus Exclusions:

An incorrect system date or time can cause security certificate mismatches, which will prevent any secure (HTTPS) connection to the license server.

Press the Windows Key, type , and press Enter. Click on Outbound Rules in the left-hand sidebar. then Allow another app

Open your panel and navigate to Virus & threat protection .

If you've carefully worked through all the steps above and the error persists, don't worry. There are still avenues for help:

Change the file type dropdown from Text Documents (*.txt) to to see the hosts file. Open the file named hosts (do not open hosts.ics ). and browse to your Lumion.exe .

Are you using a or proxy server right now? I can give you specific steps for those if the standard fixes don't do the trick. How to fix Lumion Startup Errors

: Delete those specific lines entirely. Save the file ( Ctrl + S ) and close Notepad. 2. Configure Windows Defender Firewall

Change the file type dropdown from Text Documents (*.txt) to . Select and open the file named hosts . Scan the document for any lines containing the word lumion . Delete all lines that mention Lumion. Save the file and close Notepad. 🛡️ Step 2: Configure Antivirus and Windows Defender

Ensure both the and Public checkboxes are ticked next to it.