The scanner can be operated with Win-11. The installation of drivers and software is mediocre.
The scanner user interface is poor.
It works, yes, scanning is possible but with far too many restrictions.
Compared to the earlier Canon versions, this is a significant step backwards.
What was previously possible in one step now requires several steps and even then only with compromises.
What a pity.

No problem with Win11

Works without problems under Win11.

The scanner works for me without any problems under Windows 10 and also 11.