Brother Printer Won't Connect to WiFi — Fixed
By Ryan Green · Updated July 2026 · Independent guide · PrinterCare USA LLC (not affiliated with any printer manufacturer)
Brother printers are reliable workhorses, but WiFi connectivity issues frustrate even experienced users—especially when the connection keeps dropping mid-print job or refuses to reconnect after sleep mode. The good news: 90% of these cases come down to three fixable culprits—interference, outdated firmware, or incorrect network credentials stored in the printer's memory.
This guide walks you through every legitimate fix a technician would try, ordered from quickest to most involved. You'll likely solve this in under 10 minutes without any special tools.
How to fix it — step by step
- Power cycle everything (30-second hold). Unplug the printer's power cable and hold down the power button for 30 seconds to fully discharge residual power. Simultaneously, unplug your WiFi router. Wait 60 seconds total, then plug in the router first and let it boot fully (2-3 minutes until all lights stabilize), then plug in the printer. This clears network handshake errors that cause drops.
- Forget the printer from your device. On Windows 11: Settings > Bluetooth & devices > Printers & scanners, find your Brother printer, click it, then 'Remove device.' On Mac: System Settings > Printers & Scanners, select the Brother printer, and click the minus (-) button. This removes corrupted network credentials stored on your computer.
- Check printer WiFi signal strength. Press Menu on the printer's physical panel, navigate to Network Settings > WiFi Status (exact menu names vary by model, but look for 'Status' or 'Signal'), and note the signal strength percentage. If below 30%, move the printer closer to the router or remove physical obstructions. Metal file cabinets and microwave ovens interfere heavily with 2.4GHz signals.
- Re-add the printer with correct credentials. Press Menu > Network > WiFi Setup on the printer. Select your network from the available list (not manual entry—let it see your SSID). Enter your WiFi password exactly as it appears (case-sensitive on most networks). Wait for the 'Connected' confirmation message on the printer display before proceeding.
- Verify the printer IP address hasn't changed. Press Menu > Network > TCP/IP on the printer and note the IP address shown (usually starts with 192.168). Then forget and re-add the printer in Windows Settings or Mac System Settings using the printer's name (not IP). Many connection drops happen because DHCP assigns a new IP and your device still searches for the old one.
- Update printer firmware through web interface. Open a web browser and type the printer's IP address (from Step 5) into the address bar, like 192.168.1.100. Log in using 'admin' and the printer's default password (usually on a label on the printer or 'access' if you haven't changed it). Go to Settings > Firmware Update and check for available updates. Download and install any pending updates—outdated firmware is the #2 cause of WiFi instability.
- Switch WiFi bands if printer supports dual-band. Some Brother printers (check your model specs) support both 2.4GHz and 5GHz. If your router broadcasts both, try connecting to the 5GHz band through Menu > Network > WiFi Setup. 5GHz has less interference from microwaves and cordless phones but requires closer proximity. If the printer only supports 2.4GHz, ensure it's not competing with too many IoT devices on that band.
- Factory reset if nothing else works. Press Menu > Settings > General > Restore Defaults or 'Reset Network Settings' (menu varies by model). This clears all saved WiFi data and returns the printer to factory state. After reset, you'll need to set up WiFi from scratch. If the connection holds after a factory reset but fails after a few days, the issue is likely DHCP lease renewal—contact your router manufacturer or consider a $49 remote tech session to configure advanced settings.
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 Brother printer drop WiFi connection after 20 minutes of inactivity?
The printer enters sleep mode and loses the WiFi handshake, then struggles to re-authenticate. Check Menu > Power Save Settings and either disable it entirely or increase the idle timeout to 60+ minutes. Alternatively, ensure the printer's firmware is current—sleep-mode bugs were fixed in updates released after 2022.
My Brother printer connects but then immediately shows 'offline' in Windows—why?
This usually means the printer got a new IP address from your router after a reboot, but Windows still has the old one cached. Go to Settings > Devices > Printers & Scanners, remove the printer completely, restart Windows, then re-add it by searching for 'Brother' in the Add Device menu. Windows will auto-detect and assign the current IP.
Does a 2.4GHz vs 5GHz WiFi band matter for Brother printers?
Most Brother consumer printers only support 2.4GHz, which is more crowded but has better range. If your router broadcasts on both bands, separate them in your router settings so the printer isn't trying to jump between them. Some newer Brother business models support 5GHz—check your model's spec sheet on Brother's website to confirm.
I've tried everything and the printer still won't stay connected—what's left?
Before replacing the printer, verify your router hasn't marked the printer MAC address as blocked (check your router's admin panel under Connected Devices or Firewall). If unblocked and the factory reset didn't help, the WiFi module itself may be failing—this typically requires a technician visit or replacement. A remote support session ($49) can confirm diagnosis before you invest in a new printer.