How to get a stored WLAN "password" from Windows 7?

Reference Here Here is some simple steps On your wifi-icon right click -> Open Network and Sharing Center -> from right tab chose Manage Wireless network -> a list of all devises will occur there . To whom you want to know the password right click on that and go to properties window and chose Security Tab and the Check the box of Show Characters. That is your password

If you want to view the security key of a wireless network you've previously been connected to (regardless of whether you're still connected to it), you can try following commands (type into command prompt to execute):

1. First list all saved profiles

   netsh wlan show profiles

2. Now you can view the details of a wireless network using its name instead of "ProfileName"

   netsh wlan show profile name="ProfileName" key=clear

Note that you may want to execute the commands inside an elevated command prompt (that is, run cmd.exe with administrator privileges) in order to ensure that you have enough rights to view the networks password.

Read more about managing network profiles here.

This works for Windows 8 (and 10) as well.

WirelessKeyView from Nirsoft should do the trick.

However, AVG (antivirus) flags it up as spyware/adware. Not sure if it is or not but just thought you may like to know...