By default, you can't see your telnet window. I happened to run my telnet in my command prompt and found that, Telnet client is not installed. Below are the steps to get the "Telnet" client.
1. Open the Programs and Features Control Panel applet (Start, Control Panel, Programs and Features).
2. Select "Turn Windows features on or off."
3, Select the Telnet Client option and click OK.
You will get a window informing "Telnet" is getting installed in your machine.
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Regards,
Venkatesan Prabu .J