How do I copy text from PuTTY to another window?

I've copied from the PuTTY manual:

PuTTY's copy and paste works entirely with the mouse. In order to copy text to the clipboard, you just click the left mouse button in the terminal window, and drag to select text. When you let go of the button, the text is automatically copied to the clipboard. You do not need to press Ctrl-C or Ctrl-Ins; in fact, if you do press Ctrl-C, PuTTY will send a Ctrl-C character down your session to the server where it will probably cause a process to be interrupted.

COPY: Simply highlight text in PuTTY. Press and keep pressed left mouse button + move mouse to highlight the text you want + release left mouse button and text will be copied to the clipboard.

PASTE: Just click the middle mouse button to paste clipboard text in PuTTY itself or every other application that has a text prompt. Please note that modern mice don't have the middle 'button' but usually a wheel, so you have to click on the wheel. If you are using a laptop, tapping on the upper right corner of the touchpad (or on some models, pressing both buttons simultaneously) should reproduce a mouse middle click.

I found the solution here

Problem

Copy Paste text from PuTTY to Another Application on Ubuntu not working

solution

Select the text you want to copy on the screen and leave as it is. This will copy the text to PuTTY clipboard.

pasting to other application:

Go to the other application and press the middle button of the mouse. If your mouse only has two buttons, then press both left and right buttons simultaneously, it will paste the text on the other application. However, if you try to use CTRL + V , it will paste the content which is present in the default clipboard.

This worked for me on Fedora