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Leaving your business printer on default credentials is an open invitation for security breaches. A printer sits on your local network, meaning anyone with network access—or a malicious actor breaching your firewall—can modify your print routing, intercept sensitive print jobs, or use the device to launch lateral attacks across your servers. How to Change the Password: Log into using your current admin credentials. Navigate to the Security or Administrator Settings tab. Select Change Password or User Management .
There is no official master password. Any website offering a "universal Epson admin password" (e.g., epson , admin , password ) is guessing. The only universal truth is that a full reset wipes the lock.
This method is done directly on the printer's touchscreen: epson wfc5790 admin password
If the physical screen demands an admin password just to access the "General Settings" menu, you must perform a hard factory reset. Turn off the printer completely.
Because the WFC5790 is often used in business environments, the standard "Factory Reset" from the menu may still ask for the admin password to proceed. If that happens, here is the workaround:
In most cases, the default administrator password is the product's serial number . This public link is valid for 7 days
Locate the white sticker on the back or bottom of the printer. Look for "S/N" or "Serial Number." It is usually an 8-character string consisting of alphanumeric characters (e.g., XYZK123456 ). How to Use the Admin Password (Web Config)
Change static IP addresses, manage Wi-Fi connections, or update DNS configurations.
A: Your firmware may be too new. Epson Pro series printers now use a one-way hash for the admin password. You have two options: Can’t copy the link right now
If the serial number does not work, do not add the "EPSON" prefix. Use only the alphanumeric string.
If you find the serial number cumbersome, you can update it via the control panel:
If you have tried the serial number, access , and a full factory reset, but are still locked out, consider these troubleshooting steps:
Restrict color printing privileges or monitor printing volumes to control operational costs. 3. How to Reset the Epson WF-C5790 Admin Password