@Gareth86
Welcome to the HP support community.
I understand that you want to reset EWS login credentials.
Did you get any error message while trying the above steps to reset EWS page?
Meanwhile:-
Perform a power reset
- Turn on the printer, if it is not already on.
- Wait until the printer is idle and silent before you continue.
- With the printer turned on, disconnect the power cord from the rear of the printer.
- Wait at least 30 seconds.
- Plug back the power cable straight to a wall outlet and printer without any surge protector.
- Turn on the printer.
Restore Network Defaults to factory settings:
Press the Wireless button and the Cancel button from the printer control panel at the same time, and then hold them for three seconds.
Login to the EWS page with the default credentials and change the password.
Username: admin
Password: "leave it blank"
Let me know how it goes.
To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.
Cheers.
Sandytechy20
I am an HP Employee