hp smart app won't find my m234dwe during setup. it's plugged in and turned on.

Diagnosis

The HP LaserJet Pro MFP M234dwe is likely suffering from a "handshake failure" between the printer's internal network card and the HP Smart app. This happens because the printer, by default, enters a dormant state after a few minutes of inactivity during the initial power-on phase. If the printer is not explicitly placed in "Setup Mode," it will not broadcast the temporary internal SSID (usually starting with "HP-Setup-") that the HP Smart app requires to establish the initial Bluetooth or Wi-Fi Direct bridge. Furthermore, this specific "e" series model is an HP+ enabled device, which requires a constant cloud heartbeat. If the printer has previously been attempted to be connected to a different network, or if it is stuck in a partial setup state, the app will fail to "discover" the hardware because the printer is searching for a known gateway rather than broadcasting its availability. You can confirm this by looking at the Wireless light: if it is solid blue or completely off, the printer is not in discovery mode; it must be blinking blue to be visible to the app.

How to Fix It

To force the M234dwe into a discoverable state and complete the HP Smart setup, follow these exact steps:

1. Power cycle the hardware: Unplug the power cord from the back of the printer, wait 30 seconds, and plug it back in. Wait for the printer to reach an idle state.
2. Trigger the Menu: Press and hold the Information (i) button for exactly 3 seconds. This will cause the control panel buttons to illuminate, indicating the printer is ready for a command sequence.
3. Enter Setup Mode: While the buttons are lit, press and hold the Wireless button and the Cancel (X) button simultaneously for approximately 5 seconds.
4. Verify State: Release the buttons. The printer will perform a soft reboot. Once it restarts, verify that the Wireless light is blinking blue. This confirms the printer is now broadcasting its setup signal.
5. App Sequence: Open the HP Smart app on your mobile device. Ensure your phone is connected to a 2.4GHz Wi-Fi band (as the M234dwe can struggle with 5GHz handshakes during initial pairing). Tap the "Add Printer" or "+" icon and select the M234dwe from the list of discovered devices.
6. Authentication: Follow the on-screen prompts to enter your Wi-Fi password. The app will now push the network credentials to the printer via the temporary bridge.

If That Didn't Work

• Disable 5GHz Band Steering: Many modern routers combine 2.4GHz and 5GHz into one SSID. The M234dwe often fails to connect if the router tries to force it onto 5GHz. Log into your router settings and temporarily disable "Smart Connect" or "Band Steering," creating two separate network names. Connect your phone to the 2.4GHz band and try the setup again.
• Reset Network Defaults: If the printer was previously owned or connected to another router, perform a hard network reset. While the printer is on, press and hold the Wireless and Cancel buttons for 10 seconds. This clears the NVRAM of old IP addresses and SSID caches.
• Use a USB Bridge: If the wireless discovery continues to fail, connect the printer to a PC via a USB-A to USB-B cable. Open HP Smart on the desktop; the app can often "push" the Wi-Fi settings through the USB cable, bypassing the need for the wireless discovery phase entirely.
• Check Firewall/VPN: If you are using a VPN (like NordVPN or ExpressVPN) or a strict corporate firewall on your phone, the HP Smart app will be blocked from seeing local network devices. Disable all VPNs and "Private Address" (MAC Randomization) settings in your phone's Wi-Fi menu for your home network.

Heads Up

• HP+ Requirement: Since this is an "e" model, you must have an HP account and an active internet connection to use the printer. If the printer is not registered to the cloud, it may enter a "locked" state where it refuses to print even if the Wi-Fi is connected.
• Firmware Updates: Immediately after the app finds the printer, it will likely prompt for a firmware update. Do not turn off the printer during this process, as it can brick the network card.
• Paper Jam Sensor: If the Wireless light is blinking but you also see a flashing amber light, clear any paper path errors first. The printer will often prioritize hardware errors over network setup.
• IP Conflict: If the app finds the printer but fails to "finish" the setup, assign a Static IP to the printer via the EWS (Embedded Web Server) to prevent the printer from dropping off the network after a power outage.