: Search your inbox for "RealVNC" or "VNC License" from the date of your original purchase. Current Licensing for VNC 5.x Legacy Support

If you previously purchased a perpetual license for VNC 5.x, you can retrieve your details via these official methods: RealVNC Account Portal : Log in to the RealVNC Deployment page

: Version 5.0.5 is significantly outdated. While old perpetual keys may still work on compatible operating systems, RealVNC highly recommends upgrading to RealVNC Connect for security and modern OS support. Activation

command-line tool or the "Display License Wizard" within the VNC Server application, entering the 25-character key formatted as XXXXX-XXXXX-XXXXX-XXXXX-XXXXX Free Alternatives