imageCLASS X LBP1440 won't work after Windows Security Update

[SLB1]

I have a Canon LBP 1440 that has worked efficiently for 2-3 years until May 12, 2026 when Microsoft issued 2 new updates to Windows 11.  Since May 12, the computer and the printer do not connect.  I tried removing the printer and installing current Canon printer driver for LBP 1440 but computer doesn't see the printer.  Anyone know of a fix?  Many thanks for any suggestions.

[shadowsports]

Greetings,

I'm not aware of any recent updates that has affected printer communication. 

Your first step should have been to uninstall the Windows updates.  This would have allowed you to test if the updates were actually the cause of your issue.

How is your printer connected and to what? 

I'm happy to provide next steps once you reply.

[SLB1]

I didn't uninstall the Windows updates but I did connect the printer to an old computer that runs Windows 10.  The printer works fine with the Windows 10 computer.  This, together with the fact that the printer functioned well until recently with the Windows 11 computers is the basis of my belief that an update is causing the problem.

The printer is connected via a cable to the Windows 11 computers, one a laptop and the second a desktop.  The computers are connected to the internet via wifi.  When I connected the printer to my computer Windows 10 computer I used the same cable and the Windows 10 was hard-wired to the internet.  Any suggestions would be appreicated!

[shadowsports]

Greetings,

I'm afraid the information you've provided is contradictory. 

The printer is connected "via cable". This sounds like you're using a USB connection? 

Then you say the computers are connected to the internet "via Wi-Fi"

Later you say the windows 10 PC  is "hardwired to the internet" which would indicate an ethernet connection.

Please clarify   You're using a USB cable to connect the printer between the two PC's.  How the computers are connected to the internet is likely not applicable to your issue.  Internet connectivity is not required for printing.  

You can still uninstall the updates on the PC that's experiencing printing problems to confirm your printing issue.  If that's not the problem, the updates will install again.  After uninstalling the Updates, you'll want to restart the PC before testing printing again?  If you're not sure how to do this, let me know and I'll provide the steps 😉

Please ensure you're connecting directly to an available USB port on the system and not through a hub, cable extender or adapter.