Whether you are trying to configure Scan to Email, set up address book contacts, or secure the printer from unauthorized changes, you will inevitably hit a login screen asking for an "Admin Password." If you have never changed it, you will need the .
On some older Epson models, the default password was the last 4 digits of the serial number. While less common on the WF-4820, it is worth checking the sticker on the back or bottom of the unit. Try entering the last 4 digits of the serial number as the password. epson wf-4820 default admin password
If you can print a network status sheet from the printer's menu (Settings > Network Settings > Network Status), the serial number is sometimes listed there. Crucial Tips for Entering the Password: Whether you are trying to configure Scan to