It's relatively easy to see the wireless key of the wireless network you are actively connected to, but say you want to pull up a key that you are NOT currently connected to? Easy!
- Run CMD as Administrator
- List your WLAN profiles:
NETSH WLAN SHOW PROFILES
- Find the wireless network you want to find the key for, then type-
NETSH WLAN SHOW PROFILES NAME="profile_name_from_step2" KEY=CLEAR
- Under "Security Settings", the key will be displayed beside "Key Content"
Make sure you set the KEY parameter to CLEAR for the Security Key to be displayed in "CLEAR" TEXT.