@Giotto: If you mean the Console window, then indeed, it does not support input:
https://winscp.net/eng/docs/ui_console
https://winscp.net/eng/docs/remote_command

You can open the session in actual PuTTY, if you need full console:
https://winscp.net/eng/docs/integration_putty#open_putty

Ciao, ho un piccolo problema che non riesco a risolvere. Quando apro la scheda PUTTY si apre una scheda nera con il nome del dominio "ROOT" gia impostato al rigo successivo mi chiede la password ma non riesco ad inserirla. Praticamente non mi fa scrivere nulla da tastiera e neanche con il copia incolla. come posso risolvere? grazie infinite e una buona giornata.

Thanks for your suggestion. I'll think about it.

When launching PuTTY from WinSCP, capture the window and show it in a tab.

I've tried some of the tabbed PuTTY variations but I

1. Don't always trust those download locations to provide clean code.
   
2. They all want to add functionality beyond the multi document interface.
   
3. I forget what the third one was, but I had 3 complaints.
   

I'm thinking mostly about the Explorer interface here: perhaps a toggle button on the right hand pane to swap between the file view and the PuTTY view – the downside is that this would limit it to one PuTTY session per connection. The benefit is that the GUI and related console session would never get separated.