Lexmark Printer Won't Connect to WiFi — Fixed
By Ryan Green · Updated July 2026 · Independent guide · PrinterCare USA LLC (not affiliated with any printer manufacturer)
Lexmark printers dropping WiFi connections mid-job or refusing to connect at all is frustrating, especially when you need to print immediately. This usually isn't a hardware failure—it's almost always a configuration, interference, or firmware issue that you can fix yourself in 10-20 minutes.
Start with the simplest solutions first; most are resolved in the first 2-3 steps.
How to fix it — step by step
- Power cycle the printer and router. Turn off your Lexmark printer completely (not sleep mode) and unplug it for 30 seconds. At the same time, unplug your router for 30 seconds. Plug the router back in first, wait for it to fully boot (all lights stable), then power on the printer. This resets the WiFi handshake and clears temporary connection conflicts.
- Verify WiFi password and network name via printer display. On the printer's control panel, go to Settings > Network > Wireless to confirm the SSID (network name) matches your router and shows a strong signal (look for signal bars or -dBm value above -70). If the SSID is missing or shows weak signal, your printer may be too far from the router or there's interference. Move the printer closer to the router temporarily to test.
- Check for 2.4GHz vs 5GHz band mismatch. Most Lexmark printers only support 2.4GHz WiFi, not 5GHz. If your router broadcasts both bands with the same network name (band steering), the printer may connect to 5GHz and fail. Log into your router settings (usually 192.168.1.1 in a browser) and either disable 5GHz, create a separate 2.4GHz network name, or explicitly bind your printer's MAC address to 2.4GHz only.
- Clear stored WiFi credentials on the printer. Navigate to Settings > Network > Wireless > Forget Network (or 'Remove Network') on the printer's display. After clearing, reconnect by selecting your WiFi network again and re-entering the password character by character. Stored credentials sometimes corrupt, and re-entering manually forces a fresh connection negotiation.
- Update printer firmware from Lexmark's support website. Visit support.lexmark.com, enter your printer model number, and download the latest firmware file to your Windows or Mac computer. Connect the printer via USB cable, extract the firmware file, and follow Lexmark's on-screen installation wizard. Firmware updates often patch WiFi stack bugs that cause intermittent drops. Restart the printer after updating.
- Reduce WiFi interference and channel congestion. WiFi interference from microwaves, cordless phones, and neighboring networks causes Lexmark drops. Use a WiFi analyzer app (like WiFi Analyzer on Windows or iStumbler on Mac) to check which WiFi channels are least congested. Log into your router and manually set it to channel 1, 6, or 11 (non-overlapping 2.4GHz channels). Restart the router and reconnect your printer.
- Factory reset the printer's network settings. If none of the above work, perform a network-only reset: go to Settings > General > Reset > Reset Network Settings. This erases all saved WiFi networks and passwords but keeps your print job history. After reset, reconnect to WiFi from scratch. If the printer still drops, proceed to the next step.
- Contact Lexmark support or use remote diagnostics. If the printer drops connection after all steps above, contact Lexmark's phone support or use their remote diagnostics service (around $49 for one session). A technician can check your printer's WiFi module hardware status, review system logs, and confirm whether the issue is a failing WiFi card. This is necessary before considering hardware replacement.
Still stuck? A technician can fix it remotely today.
Independent remote support — you watch every step, and you pay the flat $49 only after your printer is working. $0 if we can't fix it.
Frequently asked questions
Why does my Lexmark printer connect but drop WiFi after a few minutes?
This is almost always caused by 2.4GHz channel interference or a WiFi band mismatch. Check that your printer is on 2.4GHz (not 5GHz), and move it away from microwave ovens and cordless phones. If drops happen at predictable times, use a WiFi analyzer app to identify congested channels and switch your router to channels 1, 6, or 11.
Does a USB cable connection work, but WiFi doesn't?
Yes, that's a clear sign the WiFi module is functioning but connection negotiation is failing—not a hardware failure. This points to a firmware bug, network settings corruption, or channel/password mismatch. Follow steps 4 (clear credentials), 5 (update firmware), and 3 (check band settings) in order.
My Lexmark printer shows 'WiFi disabled' in the network menu. What does that mean?
The WiFi module is turned off in software. Navigate to Settings > Network > Wireless and toggle 'WiFi On' or 'Enable Wireless.' The printer may have auto-disabled WiFi after repeated failed connection attempts. After enabling, wait 10 seconds for the module to boot, then manually select your network again.
Can I use a 5GHz WiFi band with my Lexmark printer?
Most Lexmark consumer models only support 2.4GHz. Check your printer's spec sheet or the manual for 'wireless standards'—if it lists 802.11a/ac, it supports 5GHz, but the vast majority do not. If your router is 5GHz only, you'll need a dual-band router or a 2.4GHz extender.