Microsoft’s latest update broke many legacy TWAIN drivers. Fix:
If your iR2420 lacks the Universal Send Kit, use USB + Network Sharing: canon imagerunner 2420 scanner setup upd
A: The scanner glass or the CCD sensor unit is dirty. Clean the flatbed glass with a microfiber cloth. Also, run Auto Gradation Adjustment from the printer's maintenance menu. Microsoft’s latest update broke many legacy TWAIN drivers
A:
Follow these steps precisely. We'll assume Windows 10/11 64-bit. If your iR2420 lacks the Universal Send Kit,
The iR2420 typically uses SMB v1.0, which is disabled by default on modern Windows.