Granmakk,
Welcome to the HP Forum.
I might be missing the point - please bear with me...
The passphrase to your network is not something we would know.
The passphrase is the password to your home (office) network. No one but you is supposed to know the password.
If you use a browser to log into your router AND if you use "remember passwords", then you can use that to get to the passphrase / password to the network.
Of course, assuming you are using "some" security on the browser, you will have at least assigned a password to the browser "remember passwords" setup -- and you have to know THAT password.
It is a circle of passwords.
If it all becomes too much and you cannot get in anywhere and it all collapses around you - reset the router with the reset button and start over completely from scratch. Ugly, but effective.
DO NOT leave your network open. If you do have to reset the router, please do assign new passwords to it and the printer and computer network access. Smiling.
Click the KudosThumbs-Up!
It is a nice way to say “Thank You" for the help.
Although I strive to reflect HP's best practices, I do not work for HP.