Error 2,140,21 or 2,157,50 appears on Canon printers when the scanner is used.
- "Printer is in use or an error has occurred. Check status. Scanner driver will be closed. Code : 2,140,21"
- On Windows: go to "devices"
- Click on "Printer"
- Click on "Stop printing".
- Reinstate the driver of the printer.
- Turn off the firewall
- Sometimes, replacing the cartridge could solve the problem.