Add an exclusion for the Lumion folder (usually C:\Program Files\Lumion 2023 ) in Windows Security or your third-party antivirus.
Even after fixing the hosts file, overzealous antivirus software may re-add these blocks or prevent the software from launching. lumion 2023 host file entries detected exclusive
In Notepad, go to and navigate to the following path: C:\Windows\System32\drivers\etc\ Add an exclusion for the Lumion folder (usually
Select the file named hosts (it will not have an extension). 3. Remove Lumion Entries If the Windows hosts file contains lines that
Ensure the Lumion installer and executable are allowed through your Firewall. Alternative Fix: Lumion Updater
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.