Lumion 12 Is Being Prevented From Contacting The License Server Official

If files were already isolated before you added the exclusion, you must manually restore them:

Is this a or an error that suddenly started happening on a working setup?

Whitelist the entire directory path: C:\Program Files\Lumion 12.0\ Add a specific process exclusion for Lumion.exe Allow Specific Domains and Ports If files were already isolated before you added

If Phase 1 didn't work, your security software is likely blocking Lumion.exe . You need to create an exception. 1. Add Lumion to Windows Defender Exclusions Open (search in the start menu). Go to Virus & threat protection .

Click on the left menu. Click the Change settings button at the top right. Click on the left menu

If you use a third-party firewall, ensure it allows traffic via Port 80 (HTTP) Port 443 (HTTPS) for Lumion-related domains. 3. Clean Your "Hosts" File

Under , click on Protection history . Look for recently blocked items associated with Lumion 12. Click the item actions and select Restore . right-click Command Prompt

Click on . Look for any recently blocked Lumion dependencies and click Restore .

while double-clicking the Lumion shortcut to force a fresh startup. For more detailed technical support, you can visit the Lumion Knowledge Base or contact their official support team URLs and domains you need to allow in your corporate firewall?

Scan the text document for any lines containing words like lumion , act-3d , or license.lumion.com . those entire lines from the document.

: Type "cmd" in the Windows search bar, right-click Command Prompt , and choose Run as administrator . Flush DNS : Type ipconfig /flushdns and press Enter . Reset Winsock : Type netsh winsock reset and press Enter .