1/2
Modern printers and especially multi-function devices are driverless (no device-model specific software or information needed), for both the printer and the scanner part. Printing works via IPP and scanning via eSCL or WSD.
On Linux this works very well and people appreciate it.
#Windows has switched over to Windows Protected Print now, in its #Windows11 24H2 release. No printer drivers supported any more, only driverless.
But it seems that scanning got forgotten ...
2/2
... or it just has a severe bug.
Many people are complaining, see here on The Register:
https://www.theregister.com/2025/01/02/scanner_canon_windows_update/
Or see this thread on Microsoft's community forum (recent comments):
That is insane.
Workaround/Fix: Switch to #Linux, or at least use #SANE under #WSL (NOTE: Command line use required). Or wipe machine and install #Windows10.
A comment to the picture in the previous post:
To the (Ed.: Windows) user: Do not open this lid at the top of your printer, this is the bug reporting unit. Service technicians put a faulty printout under that lid and initiate the bug report from their laptop (Ed.: it runs Linux).