Are you connected to Wi-Fi on one device, but need the password to log in on another? Here's how to find Wi-Fi passwords in Windows, macOS, iOS, and Android.

Try this command lines out:

netsh wlan show profiles

netsh wlan show profile 'ssid' key=clear

See the link for more information.
You can also look at my other Shaarli about how to manage wireless networks

Delete profile :

netsh wlan delete profile name=[profile name]

rem: Adm