When you try to access advanced settings—such as network security, address books, user restrictions, or power management—the printer’s display or web interface suddenly asks for an "Administrator Password." Without it, you are locked out of half of the machine’s functionality.
Once you regain access, you should set a new, memorable password to prevent future lockouts. epson wf-7840 admin password
Choose (this will reset the admin password back to the serial number). Setting a New Password When you try to access advanced settings—such as
: The default username is typically left blank or set to admin . you should set a new
To improve security, Epson recommends changing the default password: