Solution
This error is usually triggered when PuTTY, the SSH and Telnet client, is not installed on the host computer. Once PuTTY has been successfully installed and verified, restart the LabVIEW application. This ensures that LabVIEW recognizes the newly installed PuTTY components and incorporates them into the system's environment and with PuTTY installed and properly configured, the VI Connect (PuTTY).vi module should execute successfully without any further issues.