The issue is nearly always (firewall/AV) or corporate filtering blocking outbound HTTPS to Lumion’s license servers. Whitelisting the domains in Section 3 resolves the problem in >95% of cases.
The storm outside battered the reinforced glass of the architectural firm, but inside Studio Arcadia, the atmosphere was even stormier. The issue is nearly always (firewall/AV) or corporate
In Notepad, go to File > Open and navigate to: C:\Windows\System32\drivers\etc\ . In Notepad, go to File > Open and
If you have tried all the steps above and the error remains, visit the official Lumion Technical Support forum. Provide them with a screenshot of your hosts file and your firewall outbound rules. Usually, a fresh uninstall using a tool like Revo Uninstaller (to scrub the registry) followed by a reinstall is the final nuclear option. Usually, a fresh uninstall using a tool like
The error message means that the handshake failed. This is not a password issue; it is a network issue. The three primary causes are: