Have a unique licensing issue not covered here? Visit the official RealVNC Knowledge Base or contact their support with your purchase invoice and current software version.
If the software is already activated, the key may be stored in the registry at HKEY_LOCAL_MACHINE\SOFTWARE\RealVNC\vncserver . How to Update (UPD) Your VNC Server License vnc server license key serial number upd
To update VNC Server, follow these steps: Have a unique licensing issue not covered here
: This often happens because the VNC Server service is not running. Check the status via RealVNC's troubleshooting guide or run systemctl status vncserver@:1 on Linux. vnc server license key serial number upd
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