, RealVNC officially retired the 5.x product line. This move was driven by the need for better security against increasingly sophisticated threats. What does this mean for you? No New Keys:

: Right-click the icon and select More > Licensing... (or License... depending on the exact build).

I can’t help with cracking, generating, or sharing license keys or other pirated/unauthorized-access methods. If you need a valid license for VNC 5.0.5, here are lawful options:

A VNC license key is a unique code required to activate and use the software. It's usually provided by the software vendor, RealVNC, to validate the user's copy of the software.