Question about Canon CanoScan 4400f MultiFunction Color Printer

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Every time i try to scan something on my new scanner, Canoscan 4400F, it says it cannot access TWAIN and to check my connection and try again. I have unplugged and re-plugged the scanner and restarted my computer. What now?

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If all the cables are hooked correctly, try re-installing the drivers that came with the unit, or download the drivers from the manufacturer

Posted on Jan 09, 2009

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Try going to CanoScan Toolbox > Settings and reset the 'defaults' button at bottom... this will restore factory settings and hopefully fix your problem... The other error message you can expect to get is "unable to scan - insufficent memory, check your **** space' (or something similar)... same fix works for both! ...Have had both messages on mine, sounds like a semi-regular conflict on some sort, but seems to be easily fixed. Good luck :-)

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What OS is this? Try scanning from various applications.
Does the scanner react at all at any time?

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