If you need to know the password of another saved network: here’s how you would view a password of a saved network that you can’t connect to, using the command line.
Head to the start menu, type “Command” and click on the “Command Prompt” app.
Once on the command prompt, type the following: netsh wlan show profiles
Once you run that command, you’ll see a list of Windows’ saved wireless networks.
To view the password of a specific network, type the following command, editing as appropriate: netsh wlan show profile name=”Wi-Fi NAME” key=clear
Scroll through the output of that command and you should see a password in the Security Settings section of the output in the “Key Content” section.