By methodically going through these steps, you should be able to identify and possibly resolve the issue preventing Lumion from contacting the license server.
First, rule out a temporary glitch.
Open as an Administrator (Right-click > Run as Administrator). lumion is being prevented from contacting the license
Don’t let a license handshake error ruin your creative flow. In 95% of cases, this is simply a that takes 60 seconds to fix. Start with Step 2, and you’ll likely be back to placing trees and casting sunlight before your coffee gets cold. By methodically going through these steps, you should
domains that Lumion needs to access so you can provide them to your IT administrator? AI can make mistakes, so double-check responses Copy Creating a public link... You can now share this thread with others Good response Bad response 6 sites How do you resolve antivirus and firewall problems? Here's how: * If you have successfully installed Lumion: A: Exclusions to antivirus and security software. 1.1: Please add exclusi... Lumion How do you resolve antivirus and firewall problems? 1.2: Ensure to add an exclusion for Lumion.exe in Windows Defender Firewall. 1.3: If you can't add an exclusion for Lumion, please... Lumion How do you resolve antivirus and firewall problems? 1.1: Please add an exclusion for Lumion.exe in all third-party firewalls. If you need help with this step, please contact the manu... Lumion How to Fix Lumion 11 Start-Up Error Problem | Channel not ... Feb 20, 2022 — Don’t let a license handshake error ruin your
If you use third-party security software, you must add Lumion to the "Exceptions" or "Whitelist" list within that software's settings. Consult your antivirus documentation on how to "Whitelist an application."
The most frequent cause of this error is a modified Windows Hosts file. Sometimes, during a messy installation or due to previous software conflicts, entries are added to this file that specifically block Lumion’s domains.