This is the most searched topic regarding this printer, and the solution is where Epson’s strict security becomes a double-edged sword.
If your browser displays a "Your connection is not private" or SSL certificate warning, click Advanced and choose Proceed to [IP Address] (unsafe) . This is normal for local network devices lacking public SSL certificates. epson wfc5790 admin password
Use the Web Config menu to lock the physical touchscreen panel so unauthorized office walk-ups cannot change network configurations. This is the most searched topic regarding this
If a custom password was set and forgotten, you cannot access the administrator features via Web Config. You must clear the printer's system settings to restore the default admin password. Use the Web Config menu to lock the
If you see "Invalid Password" or "Wrong Password," someone has already set a custom password. This is common in offices where an IT department initially set up security policies. When that IT person leaves without documenting the password, the printer becomes a brick wall.
Depending on the manufacture date and firmware version of your WF-C5790, the default login credentials will be one of two variations: Variation 1: The Serial Number (Newer Firmware)
Hold them down until the Epson logo appears or a specialized system menu opens.