It is disappointing that the troubleshooter should have missed something so basic – yet so obscure for people not familiar with DOS. New 07 Apr 1. I hope this is enough information to give someone a start as to what is happening here. Page 1 of 2 1 2 Last Jump to page: Tech support scams are an industry-wide issue where scammers attempt to trick you into paying for unnecessary technical support services. What does “fix” it is System Restore one of Windows great features. Is your USB3 Intel?

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It worked and was much simpler than other suggested fixes. The driver from canon is for the Windows 7 64 bit. I’ve forgotten my password.

I also have Arc Soft Photostudio and it cannot find it either twain error. I can delete the driver, reboot and the driver is back so I guess that’s true. September 29th, at Reinstalling the drivers made no difference, but editing the Path canoscaj as you suggested solved the problem instantly.

Canoscan Toolbox Failed To Open A Driver – bm-programmes

Subscribe in reader or email. I am fairly knowledgable with PC’s but this one stumps me.


This thread is locked. Thanks a lot for this fix. January 13th, at Did this solve your problem?

Canon scanner “Unable to open TWAIN source” error.

Welcome to BleepingComputera free community where people like yourself come together to discuss and learn how to use their computers. You can follow the question or vote as helpful, but you cannot reply to this thread. My scanner worked as usual after I have done this. It’s mostly driver issue. December 12th, at Hi, don’t know if you still solution for original thread, anyway you can solve adding to PATH variable, the location of twain canoscaan in my case C: This does not work.

Is your USB3 Intel? As a researcher we often forget to follow up important publications – and it’s practically impossible to search many keywords or researchers’ names everyday. There was no problem until something in my system was recently automatically updated -? New 28 Aug 9. December 22nd, at cahoscan Check if you have the following folder: Probably something simple but finding it appears difficult. I would suggest to update both toplbox environment variable and both computer environment Let me know if it solved Bye Fabrizio.


The driver is shown as installed and ok in device manager. AutoPager Chrome, Very go productivity tool Extracting wavelet coherence values. It has puzzled Canon, nothing in the forum so far has a solution and I am puzzled as I have spnet many hours on this.

Please log in to reply. E-Mail will not be published required. This looks to be a tricky one.

Tech support scams are an industry-wide issue where scammers attempt to trick you into paying for unnecessary technical support services. When its working it is normally plugged in to USB3 ports.

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