Question about Canon CanoScan N656U Flatbed Scanner

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"Unable to open TWAIN server" Please assist

I have a problem saying "Unable to open TWAIN server". How
can I get this resolved? Im' on XP system.

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  • Anonymous Sep 09, 2008

    WON'T COME ON LINE AND SCAN

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  • 73 Answers

Track down the twain driver for that scanner.. thats the box that opens when you scan... google for the company, download the driver.. re-install tadahh.
Still no luck? manually remove the old one.. use search to finfd the twain folder in your windows system (prob twain32) then re-install.
Still no luck? Scanner has died.

Posted on Feb 16, 2008

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Posted on Jan 02, 2017

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This is an issue with the Driver Installation, Get the drivers Uninstall and reinstalled from the CD.

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I need a TWAIN driver for a Canon CanoScan N670U


Dear DDuck,
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"Unable to open TWAIN server" Please assist


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Canon Flatbed scanner model D646U ex for Windows XP


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http://www.fixya.com/support/r545614-installation_problems_clean_boot_install

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The download website for your scanner is here:

http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=DownloadDetailTabAct&fcategoryid=351&modelid=8008

A TWAIN driver is simply a generic scanner software driver that your specific Canon software can hook into and use.

I recommend starting with this one and see if it installs the TWAIN driver you need:

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1 Answer

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