Lumion needs to communicate with its activation servers to verify your license. If the Windows hosts file contains lines that redirect Lumion-related domains (like lumion3d.net ) to a local address (like 127.0.0.1 ), the software cannot "phone home" and will trigger this error. This can be caused by: : Previous attempts to block Lumion traffic.
Look for any lines containing the word . These typically look like: 127.0.0.1 backup.lumion3d.net 127.0.0.1 license.lumion3d.net
: Tools that modify system files for "speed" or "privacy." Step-by-Step Fix for Lumion 2023 lumion 2023 host file entries detected exclusive
: If you don't see any files, change the dropdown menu in the bottom-right corner from "Text Documents ( .txt)" to **"All Files ( .*)"**.
Even after fixing the hosts file, overzealous antivirus software may re-add these blocks or prevent the software from launching. Lumion needs to communicate with its activation servers
The error message (often appearing as "Host file entries detected") typically occurs when Lumion's license verification system is blocked by your Windows hosts file.
Add an exclusion for the Lumion folder (usually C:\Program Files\Lumion 2023 ) in Windows Security or your third-party antivirus. Look for any lines containing the word
: Antivirus or firewall programs adding "protective" entries to the hosts file.
Ensure the Lumion installer and executable are allowed through your Firewall. Alternative Fix: Lumion Updater