F5F Stay Refreshed Hardware Desktop Recent issue with Canon printers experiencing power cycling during WiFi connection attempts. New bug reported.

Recent issue with Canon printers experiencing power cycling during WiFi connection attempts. New bug reported.

Recent issue with Canon printers experiencing power cycling during WiFi connection attempts. New bug reported.

T
Tinyninja120
Member
57
03-07-2022, 01:14 AM
#1
I was planning to purchase a new printer because my Canon MX492 kept restarting repeatedly after power-on since May 29, 2022. The problem began whenever I tried printing; the device displayed it wasn’t responding. Upon inspection, it had lost its WiFi connection. Even when I connected to my network, it prompted for the WPS feature—which most users don’t use—and required navigating through advanced settings to set a passcode. While clicking through the menu, I selected WiFi, but the printer shut down and restarted automatically. After completing the initial calibration, it emitted a beep and restarted from scratch. The screen only showed “Canon” with no interactive buttons. I consulted the Canon forums, discovering many others faced similar issues across different models. To halt the boot loop, I disabled WiFi on my router via UniFi controller, which stopped the printer from connecting. Now it boots normally but only accepts USB connections. There are no available firmware updates to resolve this. It appears Canon hasn’t released a fix. As a workaround, the issue seems linked to DNS settings. Temporarily turning off the WiFi access point (or unplugging the Ethernet from the router’s WAN port) would disable the internet connection, allowing the printer to operate as expected. Once you’ve reset it, press OK and choose “NO” or “Off” in the settings menu before restarting. This method usually works for most users. (Settings may differ.) Affected printers so far include MX490x series, MG7520, MG5020, MG6620 IP110. Community insights: https://community.usa.canon.com/t5/Deskt...ort=recent No drivers newer than 10/04/21, but nothing about “firmware” either: https://www.usa.canon.com/internet/porta..._downloads
T
Tinyninja120
03-07-2022, 01:14 AM #1

I was planning to purchase a new printer because my Canon MX492 kept restarting repeatedly after power-on since May 29, 2022. The problem began whenever I tried printing; the device displayed it wasn’t responding. Upon inspection, it had lost its WiFi connection. Even when I connected to my network, it prompted for the WPS feature—which most users don’t use—and required navigating through advanced settings to set a passcode. While clicking through the menu, I selected WiFi, but the printer shut down and restarted automatically. After completing the initial calibration, it emitted a beep and restarted from scratch. The screen only showed “Canon” with no interactive buttons. I consulted the Canon forums, discovering many others faced similar issues across different models. To halt the boot loop, I disabled WiFi on my router via UniFi controller, which stopped the printer from connecting. Now it boots normally but only accepts USB connections. There are no available firmware updates to resolve this. It appears Canon hasn’t released a fix. As a workaround, the issue seems linked to DNS settings. Temporarily turning off the WiFi access point (or unplugging the Ethernet from the router’s WAN port) would disable the internet connection, allowing the printer to operate as expected. Once you’ve reset it, press OK and choose “NO” or “Off” in the settings menu before restarting. This method usually works for most users. (Settings may differ.) Affected printers so far include MX490x series, MG7520, MG5020, MG6620 IP110. Community insights: https://community.usa.canon.com/t5/Deskt...ort=recent No drivers newer than 10/04/21, but nothing about “firmware” either: https://www.usa.canon.com/internet/porta..._downloads

M
marberg_r
Junior Member
2
03-07-2022, 01:14 AM
#2
Wired Ethernet would work much better. Most modern printers today lack Ethernet and rely on Wi-Fi or USB instead.
M
marberg_r
03-07-2022, 01:14 AM #2

Wired Ethernet would work much better. Most modern printers today lack Ethernet and rely on Wi-Fi or USB instead.

D
DYLARK01
Member
199
03-07-2022, 01:14 AM
#3
It goes beyond a simple Wi-Fi issue—it affects wired connections too. Sadly, power cycling the wired link led me to think there might be an unusual problem with the cable, which was quickly unplugged and changed without any Wi-Fi signal. Now it attempts to connect to wireless networks but crashes. It seems USB is the only option, or at least disabling the DNS server location prevents it from trying to reach other networks.
D
DYLARK01
03-07-2022, 01:14 AM #3

It goes beyond a simple Wi-Fi issue—it affects wired connections too. Sadly, power cycling the wired link led me to think there might be an unusual problem with the cable, which was quickly unplugged and changed without any Wi-Fi signal. Now it attempts to connect to wireless networks but crashes. It seems USB is the only option, or at least disabling the DNS server location prevents it from trying to reach other networks.

Y
YukiSienna
Junior Member
31
03-07-2022, 01:14 AM
#4
I've encountered the same problem with my Canon Maxify MB5350. Began yesterday (31/5/22) when the printer was connected via wired Ethernet. After disconnecting the network cable it started working fine. I suspected an issue with the built-in NIC and tried connecting it through Wi-Fi, but the same problem persisted without physically removing it from the network. Canon's technical support didn't help and only recommended sending it to a service center. The fix was simple: I turned off the modem, which cut internet access. Once that was done, the printer restarted successfully. Later, I changed its DNS server IP addresses to invalid values. After reconnecting and restarting the modem, everything functioned correctly, including network printing and SMB drive scanning. In short, to get it working again, disable the printer's internet access.
Y
YukiSienna
03-07-2022, 01:14 AM #4

I've encountered the same problem with my Canon Maxify MB5350. Began yesterday (31/5/22) when the printer was connected via wired Ethernet. After disconnecting the network cable it started working fine. I suspected an issue with the built-in NIC and tried connecting it through Wi-Fi, but the same problem persisted without physically removing it from the network. Canon's technical support didn't help and only recommended sending it to a service center. The fix was simple: I turned off the modem, which cut internet access. Once that was done, the printer restarted successfully. Later, I changed its DNS server IP addresses to invalid values. After reconnecting and restarting the modem, everything functioned correctly, including network printing and SMB drive scanning. In short, to get it working again, disable the printer's internet access.

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_HawkyShark_
Member
59
03-07-2022, 01:14 AM
#5
If you face connection issues and accidentally connect to another router, try this method. Factory reset: Press the stop button for two seconds (it shouldn’t light up, so about an inch away from the power switch—pretend it’s on the right side). After two seconds, hold the power button for two seconds. The stop button should illuminate correctly. While still holding the power button, press the stop button five times (notice the light below changes with each press). Release the power button, wait a few minutes, then press it again. If it powers on normally, you’re done. If it freezes, try again or go back to step one. This process usually takes a few tries. From there, you can either turn LAN on carefully or use a USB connection.
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_HawkyShark_
03-07-2022, 01:14 AM #5

If you face connection issues and accidentally connect to another router, try this method. Factory reset: Press the stop button for two seconds (it shouldn’t light up, so about an inch away from the power switch—pretend it’s on the right side). After two seconds, hold the power button for two seconds. The stop button should illuminate correctly. While still holding the power button, press the stop button five times (notice the light below changes with each press). Release the power button, wait a few minutes, then press it again. If it powers on normally, you’re done. If it freezes, try again or go back to step one. This process usually takes a few tries. From there, you can either turn LAN on carefully or use a USB connection.

J
JamesHond7
Posting Freak
838
03-07-2022, 01:14 AM
#6
I also discovered a fix. Changing the DNS settings on the printer and assigning it a random IP in your local network breaks the boot loop. First, turn off the WiFi that it has learned, then access the menu to make the adjustment. It's surprising... I didn't hear anything about this publicly before.
J
JamesHond7
03-07-2022, 01:14 AM #6

I also discovered a fix. Changing the DNS settings on the printer and assigning it a random IP in your local network breaks the boot loop. First, turn off the WiFi that it has learned, then access the menu to make the adjustment. It's surprising... I didn't hear anything about this publicly before.