puTTY session logout

how I logout from my current session of puTTY software after successful login to my account

you can simply type the command ‘exit’ or directly close the window using ‘x’ button on the top right corner

To logout form your current putty session type ‘exit’ or click the x button of your window.
Do remember to save the details regarding your login so that you can login easily next time.
Browse the internet for further details.

checkout the above link and watch the videos for detailed description.

Hope my response is helpful for solving your problem.