topic I have a canon canoscan 9950F that worked fine until I installed windows 8. in Desktop Inkjet Printers https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/I-have-a-canon-canoscan-9950F-that-worked-fine-until-I-installed/m-p/4781#M13130 <P>The Canoscan toolbox starts the scanner but stops after a minute with a TWAIN error communicating with the scanner.</P> Mon, 26 Nov 2012 17:18:08 GMT wrbwest 2012-11-26T17:18:08Z I have a canon canoscan 9950F that worked fine until I installed windows 8. https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/I-have-a-canon-canoscan-9950F-that-worked-fine-until-I-installed/m-p/4781#M13130 <P>The Canoscan toolbox starts the scanner but stops after a minute with a TWAIN error communicating with the scanner.</P> Mon, 26 Nov 2012 17:18:08 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/I-have-a-canon-canoscan-9950F-that-worked-fine-until-I-installed/m-p/4781#M13130 wrbwest 2012-11-26T17:18:08Z Re: I have a canon canoscan 9950F that worked fine until I installed windows 8. https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/I-have-a-canon-canoscan-9950F-that-worked-fine-until-I-installed/m-p/8593#M13131 <P>Sounds like missing driver for Win8.</P><P>Check for update of driver.</P> Mon, 24 Dec 2012 07:08:03 GMT https://community.usa.canon.com/t5/Desktop-Inkjet-Printers/I-have-a-canon-canoscan-9950F-that-worked-fine-until-I-installed/m-p/8593#M13131 Samsen 2012-12-24T07:08:03Z