Are you receiving an error message when trying to execute telnet command on Windows 8 or Windows Vista? “Error message – ’telnet’ is not recognized as an internal or external command, operable program or batch file”. This is because the telnet client has not been installed on your Windows 8 PC. You can fix this problem by installing the required Windows Feature on Windows 8.
In the metro style Windows 8 menu, navigate to Control Panel then More Settings option. In the Control Panel window, navigate to Program and Features section and click the Turn Windows features on or Off.
In the Windows Features screen, scroll down and select Telnet Client option. Then Ok button to start the installing the telnet client feature.
This would display a confirmation message that the feature has been successfully installed. Now you should be able to telnet to any other PC from the Windows 8 PC.