On Windows, right‑click the RealVNC Server tray icon and select . The License Wizard will show the current license status and expiry date. On Linux/macOS, run vnclicense -list to display all applied licenses.

Firewall blocking port 7070 or 5900 on the license server machine. Fix: On the license server, open inbound TCP 7070. On clients, ensure they can ping the server’s IP.

For , you can download the license as a file to use with the graphical License Wizard, or you can use the key directly at the command line or via policy. For RealVNC Server 6.x (legacy versions), you use the 25‑character license key with the License Wizard, at the command line, or with policy.

The VNC Server validates its license locally using a static 25-character alphanumeric key or a specialized license file. No internet handshake is required, making it the standard choice for secure, air-gapped systems. Prerequisites for Offline Licensing

Treat your offline license key as sensitive corporate data. Store it securely in a password manager or vault, and restrict access to network administrators.

To help find the right commands for your specific setup, could you share your offline servers run on? If you are managing multiple machines, Share public link

Where OFFLINELICENSE is the path to your license file.

If the option is not visible in your dashboard, you must contact RealVNC Sales or Enterprise Support to enable offline generation for your asset allocation.