scan on EPSON STYLUS NX42O

Have you tried resetting the printing system and re-adding the printer?

Reset the printing system on your Mac to solve a problem - Apple Palaikymas (LT)

Do you have the latest drivers? There are separate one for printer and scanner.

https://epson.com/Support/Printers/All-In-Ones/Epson-Stylus-Series/Epson-Stylus-NX420/s/SPT_C11CA80201?review-filter=macOS+12.x

Check for an ICA driver for your AIO on the Epson website. They had one for an NX530.

The link I previously provided

https://epson.com/Support/Printers/All-In-Ones/Epson-Stylus-Series/Epson-Stylus-NX420/s/SPT_C11CA80201?review-filter=macOS+12.x

has an ICA driver

Barney-15E wrote:

Check for an ICA driver for your AIO on the Epson website. They had one for an NX530.