[solved]Macbook doesn't remember wifi password. How to set automatic connection with remembered password

Open network preferences either from "system preferences" or by clicking on the wifi logo to open network preferences

Then click "advanced..."

If you don't see the network you want to save, you may click on the "+" and manually type the settings:
check the box of remember network this computer has joined , security as WPA2 personal AES , DNS settings as 8.8.8.8 and 8.8.4.4 , no proxies must be enabled


reference:
https://discussions.apple.com/thread/7850856