Your Canon MAXIFY GX5020 worked fine on your old single-router setup, but after switching to Eero, Orbi, or TP-Link Deco mesh, it's either refusing to pair, dropping off the network every few hours, or showing up in your computer's printer list but failing to print. The GX5020 is a high-volume single-function MegaTank printer (no scanner that's the GX6021) with dual-band WiFi and Ethernet, and nearly every mesh issue traces back to one of a few network settings you can fix in under 10 minutes.
The quickest fix is to change your mesh network's security mode from WPA3 to WPA2/WPA3 transitional. WPA3 with PMF (Protected Management Frames) required is the single biggest reason the GX5020 fails to pair or stay connected on mesh. Open your mesh app (Eero, Orbi, Deco), find the WiFi security setting, switch to WPA2/WPA3 transitional or Compatibility Mode, save, and try pairing again.
If that didn't do it, here's the rest of the list.
Why Mesh WiFi Breaks the GX5020
The GX5020 was released in 2023 with dual-band support (2.4 and 5 GHz), but mesh networks add complications that single routers don't have. Protected Management Frames (PMF) forced by WPA3 can block the printer's connection entirely. mDNS (Bonjour) discovery packets often get dropped when your computer and printer are on different mesh nodes. Aggressive band steering can bounce the printer between bands and drop the link. And client isolation, enabled by default on some mesh systems, prevents the printer from being discovered at all.
Understanding these helps you target the right fix, but you can just work through the steps below.
Switch to WPA2/WPA3 Transitional Mode
Open your mesh app. Look for WiFi or Security settings. Change the security mode from WPA3 to WPA2/WPA3 transitional (it might be labeled "Compatibility Mode" or "Mixed Mode"). Save the change, and wait about 60 seconds for the mesh to reconfigure.
The GX5020 should reconnect on its own. If not, re-pair it using the Canon PRINT app. Once it's stable, you can try switching back to WPA3 later the connection sometimes holds after the initial handshake.
Enable mDNS or Bonjour Forwarding
Mesh routers frequently block mDNS (Bonjour) traffic between nodes by default. Without it, your computer can find the printer only if both are connected to the same mesh node. As soon as either device roams to a different node, the printer disappears.
In your mesh app, search for settings like Bonjour, mDNS, local device discovery, IGMP Snooping, or AirPrint forwarding. Turn them on. This is a common setting in Eero (under Labs or Network Settings) and Orbi (under Advanced > Wireless Settings).
Use Ethernet for Rock-Solid Stability
The GX5020 has an Ethernet port, and Ethernet bypasses every WiFi-related mesh headache. Plug a Cat 5e or better cable from the printer into your nearest mesh node (most mesh nodes have Ethernet ports). Within 30 seconds the printer grabs an IP, and the touchscreen will show the new address.
On your computer, add the printer using that IP address. Wired connections don't roam, don't get blocked by WPA3, and don't depend on mDNS to stay visible. If you can run a cable, this is the one fix that never fails.
Put Your ISP Gateway in Bridge Mode
If you have both your ISP's modem/router and a separate mesh system running, you might have double NAT the printer ends up behind two routers, and discovery breaks because devices are on different subnets. Log into your ISP gateway (usually 192.168.1.1 or 192.168.0.1) and look for Bridge Mode, Pass-Through, or IP Passthrough. Enable it, save, and reboot the gateway. Then restart your mesh system and re-pair the printer.
After bridging, the mesh becomes the only router on your network, and the GX5020 shows up cleanly.
Reserve a Static IP for the Printer
If the printer keeps getting a new IP after a mesh node reboot, your computer loses track of it. In your mesh app, find the list of connected devices, tap on the GX5020, and look for a Reserve IP or Static IP option. Save it. The printer will always use the same address, so your computer never has to rediscover it.
Disable Band Steering for the GX5020
Aggressive band steering moves devices between 2.4 and 5 GHz based on signal strength. The GX5020 doesn't handle that handoff gracefully and often drops the connection. In your mesh app, see if you can disable band steering globally or, ideally, pin the printer to a specific band.
If your mesh supports per-device band assignment (Deco and Orbi often do), lock the GX5020 to the band with the strongest signal where the printer sits. 2.4 GHz is usually more reliable for printers because of its longer range.
Turn Off Client Isolation
Some mesh systems enable client isolation by default, which stops devices from talking to each other. In your mesh app, look for Client Isolation, AP Isolation, or similar make sure it's off for your main network. If you're using a guest network, put both your computer and printer on the main network instead (guest networks almost always have isolation enabled).
Make Sure 2.4 GHz Is Active During Pairing
Even though the GX5020 supports 5 GHz, it often pairs more reliably on 2.4 GHz first. If your mesh defaults to 5 GHz only (common on some Deco and Eero setups), temporarily enable 2.4 GHz in the mesh app, pair the printer, then turn 5 GHz back on. Most mesh systems can broadcast both bands under one SSID.
Once paired, the printer will usually stay connected even on 5 GHz.
Restart Your Entire Mesh System
If pairing keeps failing, do a full mesh restart. Unplug all nodes the main router and every satellite. Wait 60 seconds. Plug the main router back in and wait for it to fully boot (about 90 seconds, when all indicator lights stop flashing). Then plug each satellite back in one at a time, waiting about 30 seconds between each.
A clean boot clears stale routing tables and DHCP leases that can block printer discovery.
Reset the GX5020's Network Settings
If nothing else worked, reset just the printer's WiFi configuration. On the touchscreen, tap Setup > Device settings > LAN settings > Reset LAN settings. Confirm. The printer forgets only its network info and keeps all other settings intact.
Then pair fresh using the Canon PRINT app. With your mesh in transitional WPA2/WPA3 mode and mDNS forwarding on, the GX5020 usually pairs on the first attempt and stays connected.
