Hmmmm....I have a CanoScan 8800F that works perfectly well with Windows 11, using Windows the up-to-Win7 driver and software.
The CanoScan 9000F has a driver and Canon software for Windows 10. Did you try this in Win11? The two OSes are not all that different.
Yes, tried using CanonScan driver with Windows 11 but would not work. Got Microsoft support and they were able to get the Windows 11 scanner interface to work with the CanoScan 9000 but it didn’t offer the features the CanoScan driver did. Resorted to the Hamrick VueScan app.
2/07/2023: New product announcements!EOS R8 EOS R50RF-S55-210mm F5-7.1 IS STMRF24-50mm F4.5-6.3 IS STMRF15-30mm F4.5-6.3 IS STM