Question about Canon CanoScan 4200F Flatbed Scanner

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Canoscan 4400F & Vista

I followed all the instructions but cannot get the scanner to work.  I get an error message about the TWAIN.

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  • 8 more comments 
  • Tirleton Nov 03, 2007

    Same problem with receiving a twain error message

  • Anonymous Nov 11, 2007

    I have the same problem with a Twain error message only I have Windows XP

  • Anonymous Nov 12, 2007

    Same here, with a Canoscan N640P. I assume it's too old to be compatible with Vista, but I was hoping for an updated driver or some solution so that I don't have to go scanner shopping.

  • sixtyseven Dec 27, 2007

    PrestoPage Manager cannot 'see' the Canoscan 4400f scanner although other programs can.... I need OCR which is supplied on the disc for the Scanner which although advertised as Vista ready, required a download from the internet to work.

  • kenboy111 Jan 06, 2008

    cannot find scanner.. twain problem

  • Anonymous Feb 16, 2008

    I have a CanoScan Lide 20 Flatbed I am trying to install into my Microsoft Windows XP computer, but the Twain error came up. The computer says it cannot run the scanner program because of the Twain error. I've tried to download a free computer scan, but it's not working. What can I do to fix this error?

  • Anonymous Feb 17, 2008

    my canon 4400f scanner will not scan after depressing the copy or any other buttons. I have down loaded the latest driver from the canon web site

    but the problem persists. Can you help me.

    george r.

  • hugo 2 May 11, 2010

    Please, i need help

  • Anonymous Mar 19, 2014

    Twain error

  • Anonymous Mar 19, 2014

    Win7 64bit

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Cause 3: The application program is not TWAIN-compliant. Solution: Start ScanGear from an application program that is TWAIN-compliant.
An error message appears and the ScanGear window fails to appear. Solution 1: Reattach the USB cable and AC adapter. Only use the supplied USB cable and AC adapter with the scanner. Solution 2: Attach the USB cable to a different USB port on the computer itself (not a hub). Solution 3: If a USB hub is used for the connection, do not use it. Attach the cable to a USB port on the computer itself (not the hub). Solution 4: Install the software from the accompanying CD-ROM. Solution 5: Scanner may not be selected. Select your scanner from [Select Source]. Solution 6: Make sure that the application is TWAIN-compliant. You cannot use ScanGear with an application that is not TWAIN-compliant. Solution 7: Quit ScanGear if running the scanner driver with another application program.

Posted on Jan 09, 2009

  • 09harwoca Jan 09, 2009

    Now just to figure out if my scanner is TWAIN compliant.

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  • 53 Answers

It looks like the computers have a hard time communicating with the scanner it will be advisable to download all the current firmware available, her is the link:
http://www.usa.canon.com/consumer/controller?act=ModelInfoAct&tabact=SupportDetailTabAct&fcategoryid=235&modelid=13810#DownloadDetailAct
This should take care of the problems.

Posted on Dec 06, 2007

  • GUILLERMO ORTUNO
    GUILLERMO ORTUNO Dec 06, 2007

    Make sure to download all the available drivers too.

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uninstall all drivers and software that cam with the scanner, and then try installing the software again before connection the scanner... this is a problem when there are two different twain drivers, look for C:\Windows\twain_32\CNQ4803(2) see if there is a driver in there.

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