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Jeff Widmer's Blog - Canon Scanner – Unable to open TWAIN source
Canon DR-C240 Document Scanner at Rs 59500 | Canon Scanners in Hyderabad | ID: 21484537988
File > Select Scan / TWAIN Source does not see Canon CanoScan LiDE Scanner - IrfanView Support Forum
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IrfanView stopped recognizing any scanner driver / TWAIN source after either Windows 11 22H2 update or after installation of faulty scanner driver - Super User
Canon Scanner -- Unable to open TWAIN source - YouTube