Uninstall the ICA driver (macOS 10.13 - macOS 12).

Disconnect the USB cable between the Mac and your Brother machine.
Log on as an "Administrator".
Click Go from the Finder bar, Computer => Macintosh HD => Library => Image Capture => Devices.
Delete the Brother Scanner.
Empty the trash bin.
Reboot the Mac.

FAQs & Troubleshooting