The Traditional Windows Install
By default Windows 7 does not have the telnet client available, but you can fix that by the normal “add and remove windows components route”…
- Start > Control Panel > Programs > Turn Windows features on or off
- Check the box next to Telnet Client
A Better and MUCH Faster Way
Let’s face it, if you’re looking for telnet in Windows you’re probably not excited about navigating the GUI (especially that many steps down the rabbit hole) to install a command line client. Worse yet, you’re probably already on the command line and you just typed “telnet someserver ” only to find out…
'telnet' is not recognized as an internal or external command, operable program or batch file.
Since you are already there, try this…
Give it a moment after you hit enter then try telnet again. You should be good to go.
You can read more here…
One caviet however, they say “When the command prompt appears again, the installation is complete.” In my experience, there is more going on in the background and you have to wait a few more seconds.