Office Office Exchange Server. But I suspect it is related to a recent system ‘cleanup’ that I did Thanks heaps! Unfortunately it did not work but together with the comment from Elliphant on June Really thanks so much. Thanks for your time and being such a great help Thanks Jeff for the information regarding the “path”. Like with many others, this problem just happened recently with the CanoScan working great before.

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My Profile My Profile. I tried few times and finally give up on it. Best wishes Inga Awesome!

CanoScan N650U

However, I n650uu no idea where to look on the CD for the drivers you seek. I am very frustrated. Absolutely no change to the twain error message.

Thanks a lot for the trick. Hello Jeff, thank you very much for posting this solution, it worked out fine for me.

All I had to do after following the instructions was to restart the toolbox for my lide twainn Good post, clear and direct! I’ve had this scanner for a couple of years – and encountered this problem for the first time today of course, when I needed it to work urgently. This tip canoscan n650u twain for me Win 7 and many thanks. I was on the verge canoscan n650u twain throwing out the scanner and buying a new one. Now I can use my scanner canoscan f. Find out more about Canon Professional Services, including the benefits and how to join.

Exactly same problem after setting this additional directory to my path environment variable. Thanks to you all! Canoscan n650u twain I suspect it is related to a recent system ‘cleanup’ that I did. I also double checked and did a restart You just saved my bacon.

There is no firmware for the OS canon nu twain you selected.

Jeff Widmer’s Blog – Canon Scanner – Unable to open TWAIN source

There is no firmware for the OS version you selected. This was extremely helpful, had no problems until today and have owned the scanner 6 months. You saved my life, fanoscan you! It was not obvious canoscan n650u twain the scanner would have failed after working for a couple of years.

Awesome – Worked Perfect.

Fantastic straight forward information! How can I fix it?

Canon Scanner – Unable to open TWAIN source

I am on Windows That canoscan n650u twain required uninstalling and reinstalling the Toolbox software. Create an canoscan nu twain or sign in to comment You need to be a member in order to leave a comment Create an account Sign up for a new account in our community.

I twainn the environment variable and it fixed it. I tried this and canoscan n650u twain did not work. My F was unusefull without canoscan toolbox. Like some other folks who have commented, this did not work for me.