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If you forget your wifi password

 C:\>netsh wlan show profile YourWifiNetwordName(SSID name) key=clear


Profile YourWifiNetwordName  on interface Wi-Fi:

=======================================================================


Applied: All User Profile


Profile information

-------------------

    Version                : 1

    Type                   : Wireless LAN

    Name                   : YourWifiNetwordName 

    Control options        :

        Connection mode    : Connect automatically

        Network broadcast  : Connect only if this network is broadcasting

        AutoSwitch         : Do not switch to other networks

        MAC Randomization  : Disabled


Connectivity settings

---------------------

    Number of SSIDs        : 1

    SSID name              : "YourWifiNetwordName "

    Network type           : Infrastructure

    Radio type             : [ Any Radio Type ]

    Vendor extension          : Not present


Security settings

-----------------

    Authentication         : WPA2-Personal

    Cipher                 : CCMP

    Authentication         : WPA2-Personal

    Cipher                 : GCMP

    Security key           : Present

    Key Content            : This is the password


Cost settings

-------------

    Cost                   : Unrestricted

    Congested              : No

    Approaching Data Limit : No

    Over Data Limit        : No

    Roaming                : No

    Cost Source            : Default


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