RealVNC Connect (formerly VNC Connect), an offline license is essential for air-gapped systems or environments where cloud connectivity is prohibited. Only Enterprise subscriptions include the right to use offline licensing. 1. Obtaining Your License You can download your offline license from the RealVNC Connect Portal Device Access Deployment RealVNC Server 7.x : You will download a or a long license string. RealVNC Server 6.x : You will typically use a 25-character license key 2. Applying the Offline License

For managing multiple machines, you can paste the offline license string into the RealVNC ADMX templates

Validate Offline Access:

Once configured, you should be able to access and control remote desktops without needing an internet connection.

Reload:

Run vnclicense -reload to apply changes to active server instances.

Device Access

You won't find this file in your email. You must download it from the RealVNC Account Portal : Log in and navigate to > Deployment .

Step 3 – Transfer the File

8. Troubleshooting Common Issues

• File Format: Plain text (usually saved with a .lic or .vnc extension).
• Purpose: To prove legitimate ownership and unlock features (e.g., unlimited sessions, cloud connectivity, management console).
• Scope: Tied to a specific Machine ID (calculated from hardware and OS identifiers) to prevent copying the same license to multiple machines.

• LicenseKey – Your original product key.
• MachineID – The unique ID of the target machine.
• Signature – Cryptographic hash to prevent tampering/copying.
• Expires – Usually "never" for perpetual licenses, otherwise a date.
• Features – Enabled feature flags.