: You'll be prompted for a password. This is the password set up on the VNC Server you're trying to connect to.
These alternatives offer similar features and may be worth considering if you're looking for a free or more affordable solution. vnc viewer 5.0 5 license key
RealVNC Viewer version 5.x, including the specific VNC Viewer 5.0.5 release, is a legacy product that has reached its End of Life (EOL) as of October 3, 2022. Key Licensing & Availability Information License Key Visibility : You'll be prompted for a password