Need help changing WIFI password on MacBook PRO

to change the password for the entire network, you change the password on your Router. if you need assistance, about how to do that, just ask.

Once that is done, to change the password on an individual computer.

First, check the ask to join box:

then delete the network from the list of automatically-joined networks.

When you try to join that network, a new password can be entered.

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