If it happens that you forgot your wifi network password and still be able to reconnect automatically from your pc ( windows). You can easily view that password using the steps shown bellow.

 

On Windows 10,

1. select the Start  button

2. Settings 

3. Network & Internet  

4. Status 

5 Network and Sharing Center

6.  Connections > Select wifi name

7. Select Wireless Properties.

8. select the Security tab, then select the Show characters check box.