I usually use PuTYY, but now I need telnet from windows 8.
I enter telnet www.google.com 80
a black screen appears and when I press any key, HTTP / 1.0 crashes 400 Bad request
How to fix it?
Try pressing "Ctrl+]" in the telnet console and typing set localecho there.
Or first start telnet without parameters, set localecho, then "o google.com 80".