The Router Security Setting That’s Quietly Breaking Your Canon Printer’s WiFi

If your printer connected fine for years and suddenly can’t, your router’s security settings may be the culprit — not your printer.

If you’ve recently upgraded your router, had your ISP push a firmware update, or even just left your network running for a long time without restarting it, there’s a decent chance your Canon printer’s WiFi connection has been affected by something most people never think to check: router-level security and band configuration settings.

This is a comprehensive canon printer not finding wifi connection solution guide covering one specific cause that’s become far more common in the last couple of years as routers have shifted to newer security standards by default — often without notifying users at all.

WPA3 and the “Invisible” Compatibility Wall

WPA3 is the newer wireless security standard, and it’s becoming the default on routers — sometimes automatically enabled after a firmware update, even on a router you’ve had for years. The problem is that many printers, including a number of Canon models, were designed and certified before WPA3 became common, and their wireless chipsets simply don’t fully support it.

Here’s where it gets confusing: the printer might still appear to connect. The WiFi light turns on. The printer’s network settings page might even show a network name and IP address. But the actual handshake between the printer and the router can be incomplete or unstable, meaning the printer drops off the network intermittently, fails to respond to print jobs, or doesn’t show up at all when you try to add it on a computer.

How to Check If This Is Your Issue

Log into your router’s admin panel (usually by typing 192.168.1.1 or 192.168.0.1 into a browser). Look for a section called Wireless Security, WiFi Security, or similar. Check what security mode is selected — common options include:

• WPA2-Personal (AES)
• WPA3-Personal
• WPA2/WPA3-Transitional (sometimes called “Mixed Mode”)

If your router is set to WPA3-Personal only, and your printer is more than a few years old, this is very likely your issue.

The Fix

The most reliable fix is switching your router to WPA2/WPA3-Transitional mode if your router offers it. This mode allows newer devices to connect using WPA3 while still allowing older devices — like your printer — to connect using WPA2, all on the same network name. You get the best of both without sacrificing security for your newer devices.

If your router doesn’t offer a transitional mode and only gives you a binary choice, you may need to drop to WPA2-Personal (AES) entirely for that network. This is a reasonable trade-off for a home network — WPA2 with AES encryption is still considered secure for typical home use, and the alternative is a printer that simply doesn’t work.

The Second Half of the Puzzle: Band Steering

Even after fixing the security mode, some routers have a feature called “Band Steering” or “Smart Connect” that automatically decides which frequency band (2.4GHz vs 5GHz) each device connects to — and it doesn’t always make the right choice for older devices like printers, which often only support 2.4GHz at all.

If band steering is enabled and your printer keeps getting steered toward 5GHz (where it can’t function), it’ll appear to “search” for a network indefinitely without ever fully connecting. Disabling band steering, or creating separate network names for each band so you can manually assign your printer to the 2.4GHz one, resolves this.

Putting It Together

If your Canon printer’s WiFi connection has become unreliable after a router change, firmware update, or just over time with no obvious cause, check these two settings in this order:

1. Router security mode — switch to WPA2/WPA3-Transitional or WPA2-Personal (AES)
2. Band steering — disable it, or manually assign the printer to your 2.4GHz network

Neither of these requires touching the printer itself, and both can be done from your router’s admin panel in under 10 minutes combined.

For a complete walkthrough covering these settings alongside other common causes of Canon printer WiFi failures — including step-by-step instructions for major router brands — here’s a solution guide on why wont my canon printer connect to wifi.