A collection of solutions have been posted to restore network scanning, but I've had no success with the mf216n. Evidently there's a difference with the install programs.
Got it working on three different Win 11 24H2 computers. Here's what worked for me:
Remove the mf216n from Printers and Scanners
Go to Add and Remove Programs and remove any Canon print program **except** the Toolbox app.
If you don't have the Toolbox app, get it from Canon and install it.
Shut down and restart your computer.
If on WIFI, make sure your network is the default (the computer automatically logs onto the scanner's network).
Download the latest mf216n driver from Canon.
You'll see a note for network scanning:
If you cannot scan over a network or with a USB connection in Windows 10/Windows 8.1/Windows 8, install the MF driver, restart (not shut down) your PC, and then install the following program. [Windows 32-bit & 64-bit] Patch for Network Scan, USB Scan
Finding and downloading the patch:
I couldn't find it in the US; did at Canon Canada:
https://canoncanada.custhelp.com/app/answers/answer_view/a_id/1011867/~/%5Bwindows-32-bit-%26-64-bit...
Install the latest Canon mf216n driver
IMPORTANT: once the driver is installed RESTART your computer WITHOUT shutting it down.
Once restarted, install the patch.
Restart your computer.
Worked for me on three different computers. YMMV.
May success be yours,
Paul
