Lumion Invalid License Fix [exclusive] May 2026

Lumion invalid license — Fix guide

If Lumion shows an “Invalid license” (or similar) error, here’s a structured, step-by-step guide to diagnose and fix it. Follow steps in order; try a restart after major steps.

, and log back in with your Lumion Account credentials to refresh the activation. Whitelist Lumion in Firewall/Antivirus lumion invalid license fix

• If you still have the old PC: Open Lumion on it > Help > Deactivate License.
• If the old PC is dead/erased: Log into your Lumion Account dashboard online. Look for "Deactivate all devices" or "Reset Activations." (Most subscription plans allow 1-3 resets per year).

Add an exclusion for the Lumion installation folder and executable in your security software. Lumion invalid license — Fix guide If Lumion