In Notepad, go to and navigate to the following path: C:\Windows\System32\drivers\etc\
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. lumion 2023 host file entries detected exclusive
Ensure the Lumion installer and executable are allowed through your Firewall. Alternative Fix: Lumion Updater In Notepad, go to and navigate to the
Even after fixing the hosts file, overzealous antivirus software may re-add these blocks or prevent the software from launching. Ensure the Lumion installer and executable are allowed
Add an exclusion for the Lumion folder (usually C:\Program Files\Lumion 2023 ) in Windows Security or your third-party antivirus.
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.
. Once finished, save the file (Ctrl+S) and close Notepad. 4. Add Antivirus Exclusions