When your Epson WorkForce Pro WF-C5790 driver stops working, your entire office workflow can grind to a halt. This business-grade inkjet printer relies on proper driver communication to deliver its full suite of features—including automatic duplex printing, wireless connectivity, and PrecisionCore printhead technology. Whether you're seeing "Printer not found" errors, failed print jobs, or the driver simply won't install, this printer repair guide walks you through proven troubleshooting steps to restore functionality quickly.
Common Causes of Driver Failure on the WF-C5790
Before diving into fixes, understanding why your Epson WorkForce Pro WF-C5790 driver not working helps prevent recurrence. The WF-C5790 uses Epson's latest driver architecture (ESC/P-R or PostScript 3, depending on your configuration), which can conflict with outdated operating systems, security software, or previous printer installations. Network changes, Windows updates, and macOS upgrades frequently disrupt existing driver configurations on this model.
Step-by-Step Driver Troubleshooting
1
Completely Remove the Existing Driver: Navigate to Windows Settings > Apps > Installed apps and uninstall all Epson software including "Epson Printer Software," "Epson Scan 2," and "Epson Fax Utility." On Mac, use the Epson Uninstaller tool from Applications > Epson Software. Delete the printer from Devices and Printers (Windows) or System Settings > Printers & Scanners (Mac). This eliminates corrupted registry entries and plist files that cause repeated driver failures.
2
Download the Correct Driver from Epson: Visit Epson's official support site and search specifically for "WorkForce Pro WF-C5790." Download the full driver package (typically 100-150MB) rather than the basic driver. The WF-C5790 requires driver version 2.64 or later for Windows 11 compatibility, and version 10.85 or later for macOS Ventura and Sonoma. Avoid generic drivers from Windows Update—they often lack the full feature set and cause intermittent communication errors.
3
Install with Administrator Rights and Antivirus Disabled: Right-click the downloaded installer and select "Run as administrator." Temporarily disable real-time protection in Windows Security, Norton, McAfee, or Bitdefender during installation—these programs frequently quarantine Epson's WSD port monitor or network discovery components. Re-enable protection immediately after installation completes. This single step resolves approximately 40% of persistent Epson WorkForce Pro WF-C5790 driver not working cases according to printer support logs.
4
Configure the Proper Port and Protocol: During installation, select the correct connection type. For USB, ensure you're using a direct connection—not a hub—and choose USB001 or higher. For Ethernet or wireless, select "Auto" for WSD or manually enter the printer's IP address (found via the WF-C5790's control panel: Home > Network Status > Wi-Fi/Network Status > Details). The WF-C5790 supports both WSD and TCP/IP port configurations; TCP/IP is more stable for business networks with VLAN segmentation.
5
Update Firmware and Verify Communication: After driver installation, update the printer firmware to the latest version (currently FA20J7 or later). Access this via the printer's web interface by entering its IP address in a browser, or use Epson Software Updater. Print a test page from Windows (Settings > Printers & Scanners > WF-C5790 > Print test page) or Mac (System Settings > Printers & Scanners > Options & Supplies > Utility > Print Test Page). If the test page prints with correct color alignment, your driver repair is complete.
6
Reset Printing System and Rebuild Spooler (Advanced): If printing still fails, reset the print spooler service. In Windows, open Services.msc, stop "Print Spooler," delete all files in C:\Windows\System32\spool\PRINTERS\, then restart the service. On Mac, Control-click in the Printers list and select "Reset printing system." This clears stuck jobs and corrupted queue files that prevent the WF-C5790 driver from initializing properly. Re-add the printer afterward using the freshly installed driver.
⚠️ Important: Do not power cycle the WF-C5790 during firmware updates or driver installation—interruption can brick the printer's main board, requiring service center repair. The firmware update process typically takes 5-10 minutes; wait for the control panel to display "COMPLETE" before touching any buttons.
Network-Specific Troubleshooting for Business Environments
The WF-C5790 is designed for workgroup deployment with 250-sheet trays and 50-sheet ADF, meaning it often sits on corporate networks with strict security policies. If your Epson WorkForce Pro WF-C5790 driver not working persists after local troubleshooting, verify these network parameters: UDP ports 3289 and 8610 must be open for Epson Net Config; SNMP should not be blocked (used for ink level monitoring); and mDNS/Bonjour must be permitted for automatic discovery. Configure a static IP reservation in your DHCP server to prevent address changes from breaking installed drivers across multiple workstations.
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Why does my WF-C5790 driver keep disappearing after Windows updates?
Windows 10 and 11 major updates sometimes replace manufacturer drivers with generic class drivers. Prevent this by disabling automatic Windows driver updates: open System Properties > Hardware > Device Installation Settings, then select "No (your device might not work as expected)." Reinstall the full Epson driver package after each major Windows build update to maintain full functionality.
Can I use the WF-C5790 without installing the full driver?
While Windows includes basic print support for many Epson models, the WF-C5790 requires the full driver for critical business features: automatic duplexing, secure print (confidential jobs held at printer), department ID tracking, and high-speed color output up to 24 ISO ppm. The basic driver also lacks proper color management profiles for PrecisionCore printheads.
How do I fix "Driver is unavailable" on a previously working WF-C5790?
This error typically indicates corrupted driver files or a changed printer IP address. First, verify the printer's current IP matches the port configuration in printer properties. If the IP changed, update the port or set a DHCP reservation. If the IP matches, uninstall the driver completely (Step 1 above), restart your computer, and perform a clean installation. The "unavailable" status usually clears after this process.