More than one year I was using older computer for scanning only... Then I discovered your page, and after one minute my Canoscan lide 25 is back to life ! Today I installed the latest versions of iTunes/Quicktime, Daemon Tools Lite and K-Lite Codec Pack. You might have to use Jeff's path variable trick; I did that before all the rest and I didn't go back and test without it, so YMMV. http://mixtecadigital.com/twain-source/unable-to-select-twain-source-win-7.html
You solved the problem. LIN - Saturday, February 4, 2012 12:45:10 AM Thanks for the info! Jackie - Tuesday, December 8, 2009 12:42:47 AM Me Too! Watch Queue Queue __count__/__total__ Find out whyClose Canon Scanner -- Unable to open TWAIN source Xu Cui SubscribeSubscribedUnsubscribe129129 Loading...
MANOLIS XANIA - Thursday, May 26, 2011 5:43:07 AM Thanks, it worked for me. Book your tickets now and visit Synology. Now the problem should fix. In my case it was named CNQ4803.
Very long phonecalls with Canon helpdesk, emails with them, no one could help me. Please select the solutions you are interested in: Enhanced Web Reporting Monitor Information Reporting Warranty Information Reporting Enhanced Asset Management Suite Custom Inventory Reporting You can also reach us directly at I have a lide 25... Twain Source Download But here's what DID work: run the Canon Toolbox app as Administrator.
First, determine the correct path to add into the PATH environment variable. Nate - Wednesday, November 16, 2011 3:55:50 PM I could Kiss you! Now, immediately after scanning a photo, I get that stupid message, and then it stops working. JB Leep - Friday, July 29, 2011 5:18:05 PM Thanks for your help!
The problem was my newest toolbox program. Unable To Open Twain Source Please Check Connection Then Restart Toolbox Also, I have the LIDE25 Howard Fong 914 Porsche - Wednesday, January 5, 2011 6:38:39 AM OK, I'm bad. Thanks chanmmn - Friday, May 4, 2012 9:08:22 AM Running LiDE 70, Canon Toolbox 22.214.171.124a on Win7 x64. I've been working on it for days and am just going to give it away to a friend and buy another scanner.
Google definitely put the most helpful answer at top of list! Legendary Music 34,074 views 2:44 How to scan in windows 10 with no software / driver - Duration: 1:26. Canoscan Unable To Select Twain Source Fix Catherine - Sunday, January 22, 2012 2:00:40 PM It worked!! Unable To Open Twain Source Windows 10 AP - Thursday, June 6, 2013 9:48:06 AM I tried Jeff's fix in the past and it didn't work, but after coming back and reading the comments, I tried just installing
Boyd - Monday, August 15, 2011 11:26:21 AM Thanks! this content Thanks for the quick/easy fix! It worked like a charm. Scanner driver will be closed." than it gives the TWAIN error. Unable To Select Twain Source Canoscan Scanner Windows 7
John - Saturday, April 14, 2012 4:46:39 AM found this solution just five minutes before buying a new scanner .... Faizal - Wednesday, August 8, 2012 10:50:42 PM Thanks, I was holding on fixing this for days before I googled this.. Saved me buying a new scanner. http://mixtecadigital.com/twain-source/unable-to-select-twain-source-xp.html Thanks!
I have changed many types of drivers, try compatibility modes etc. Unable To Open Twain Source Canoscan Lide 500f Thank you so much !! My 4400F was unusefull without canoscan toolbox.
tadas - Friday, October 19, 2012 8:08:05 AM Excellent, concise solution. Saskia - Saturday, September 7, 2013 3:52:57 PM Another 4200F fixed, thanks! Certainly one to remember. Unable To Open Twain Source Canoscan Lide 20 It would just give me a "Scan failed" every time.
Thank you so much. Your kindness in posting this solution is STILL helping people out! DigiAtDigitex 254,729 views 3:59 UniTwain - Universal TWAIN Driver - Duration: 1:40. check over here I have made sure the Windows Image Acquisition (WIA) service is set to automatic. 3.
It helped me very much..... Steven Fox 73,333 views 1:26 Canon vs. I still don't know how my path variable got erased, but who cares, it's fixed now. cr4711 - Wednesday, August 21, 2013 6:03:25 PM Hi Jeff, thanks so much for posting this solution!
Just FYI, for above step 6, it would have been helpful to clarify that we need to scroll all the way right (to end of the path) before typing ";" then At the bottom of this dialog is an Environment Variables button. Reading back through all the comments I found one which said much the same but got it to work by running Canoscan as Administrator and voila! THanks!!!!
Technorati Tags: Canon Scanner CanoScan Toolbox,Environment Variables Recommended Canon Scanners: Canon CanoScan 9000F Color Image Scanner Canon PIXMA MG5220 Wireless Inkjet Photo All-In-One (4502B017) 430 Comments Jeff: I want to Used to work fine for years. Bugsy - Saturday, August 24, 2013 12:57:59 PM Worked like a champ. Now OK your way out of all of the dialogs and CanoScan Toolbox will now work as expected.
It helped. If we have ever helped you in the past, please consider helping us. Mike - Monday, October 22, 2012 10:38:31 AM Thank you so much! The description says its for W7 64 but if one tries downloading the driver serprately it is only for 32 bit.