Finding Stored WiFi Passwords in Windows

If you have a wireless network defined but have forgotten its password, this procedure, on a Windows PC only, will find it for you. Step 2 lists all your profiles, just select the one you need and replace the bold "WiFi-name" in the third step with its name. The password will display where the red stripe appears below.

1. Run CMD as administrator
2. netsh wlan show profile
3. netsh wlan show profile WiFi-name key=clear

https://www.techworm.net/2017/01/how-to-find-wi-fi-password-connected-networks-using-cmd.html