wireless setup is a nightmare, it just won't find my network during installation.

Diagnosis

The Brother MFC-J4535DW frequently fails to discover networks because it utilizes a 2.4GHz wireless radio that is often incompatible with modern "Smart Connect" or "Band Steering" features found in Wi-Fi 6 and Mesh routers. When a router merges the 2.4GHz and 5GHz bands into a single SSID, the printer's network card often fails to handshake with the router, leading to the "Unable to connect" or "No network found" error during the setup wizard. Furthermore, this model is sensitive to security protocols. If your router is set to WPA3-only, the MFC-J4535DW will not see the network because it primarily supports WPA2 (AES). Additionally, if your SSID contains special characters (like emojis, apostrophes, or non-standard symbols) or if the network is hidden, the printer's internal scanning tool will return an empty list of available networks, making the initial installation feel like a hardware failure when it is actually a configuration mismatch.

How to Fix It

To resolve this, you must bypass the automatic discovery process and force a manual handshake or separate your network bands. Follow these exact steps:

1. Access your router's admin panel via a web browser (usually 192.168.1.1 or 192.168.0.1). Navigate to Wireless Settings.
2. Disable "Smart Connect" or "Band Steering." Manually rename your 5GHz band by adding "-5G" to the end of the name. Ensure the 2.4GHz band remains as the primary name.
3. Set the Security Mode specifically to WPA2-PSK (AES). Do not use "WPA2/WPA3 Mixed" if the printer continues to fail.
4. On the Brother MFC-J4535DW control panel, press the Settings (wrench/screwdriver icon) button.
5. Navigate to Network > WLAN > Setup Wizard.
6. Select your 2.4GHz SSID from the list. When prompted for the password, enter it carefully using the touchscreen. Note that the password is case-sensitive; use the shift key on the on-screen keyboard for capitals.
7. Once "Connected" appears, print a Network Configuration Report from the Network menu to verify the IP address is assigned.

If That Didn't Work

• Use the WPS Push Button Method: If your router has a physical WPS button, press it for 3 seconds until the LED flashes. On the printer, go to Network > WLAN > WPS. Select "Push Button" and press OK. This bypasses the manual password entry and SSID search entirely.
• Perform a Network Reset: If the printer has "remembered" a failed connection attempt, it may refuse to scan again. Go to Settings > All Settings > Network > Network Reset. Confirm "Yes" and restart the machine before attempting the Setup Wizard again.
• Assign a Static IP via USB: Connect the printer to your PC via a USB-B cable. Download the "Full Driver & Software Package" from Brother. During the installation, select "Wireless Network Connection," and the software will "push" the Wi-Fi credentials from your computer to the printer over the cable, bypassing the printer's on-screen search.
• Check for Signal Interference: Ensure the printer is not sitting directly on top of the router or next to a microwave. A distance of 3-5 feet is ideal. If the signal strength is below -70dBm, the printer may see the network but fail to authenticate.

Heads Up

• Avoid DHCP Leases: To prevent the printer from "disappearing" from your computer every few weeks, assign it a Static IP address through your router's DHCP Reservation table using the printer's MAC address.
• Firmware Updates: Once connected, immediately run the Brother Firmware Update Tool. Brother frequently releases patches that improve wireless stability and compatibility with newer routers.
• Sleep Mode Issues: If the printer loses connection after entering Deep Sleep, go to General Setup > Ecology > Sleep Time and ensure the network interface is set to stay active.
• Firewall Blocking: If the printer is connected to Wi-Fi but the PC says "Offline," ensure Port 54925 (UDP) is open in your Windows Defender or Norton firewall settings.