HP Scanjet scanners - Initialization or 'scanner not found' error messages received when scanning with a USB connection in Windows | HP® Customer Support
PIXMA MP250 Not Scanning* - Scanner Not Communicate ERROR RESOLVED ✓ - YouTube
Fix: A Problem Prevented The Document From Being Scanned
The network scanning feature does not work when pressing the scan key on my Brother machine control panel. (For Windows) | Brother
The network scanning feature does not work when pressing the scan key on my Brother machine control panel. (For Windows) | Brother