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- #Canon 2500mg series printer does not scan how to
- #Canon 2500mg series printer does not scan windows
Be careful NOT to delete anything in that line (click Cancel and try again, if you delete anything by accident).
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At the bottom of the Advanced tab, click the "Environment Variables" button.Make sure you're in the Advanced tab by clicking on "Advanced" at the top if necessary.The slower way is to rightclick the Computer icon on your desktop, choose Properties, then on the left click Advanced System Settings.
#Canon 2500mg series printer does not scan windows
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Inside the twain_32 there should be another folder, open that folder too (in my case it's named "MF4100", yours may have a different name eg MF4120).Open Windows Explorer or Computer, and navigate to.
#Canon 2500mg series printer does not scan how to
So here's the step by step on how to get the scanner on your Canon MF4100 series multi-function device working again, for Windows 7 but you could try it for Vista and see (for techies: you just need to add a TWAIN folder's path to PATH): I thought I'd have to reinstall the drivers, but on searching I found a great solution from Jeff Widmer which worked instantly - no rebooting, no unplugging etc! I'm posting it here, with slightly quicker steps. Similarly with other scanning apps I tried, like Abbyy Finereader - I just got error messages. The MF Toolbox app appeared but, although previously it would automatically scan to PDF, nothing happened after that, no matter what buttons I clicked. In my case the scanner function on my Canon i-Sensys MF4150 LaserBase laser multifunction printer, copier, scanner and fax suddenly started playing up and it wouldn't scan anything, whatever application I tried to use, even though the printer and copier worked fine. I've not tried it on other i-Sensys MF4100 imageClass series devices, like MF4120 or MF4140, but it worked like a charm on my MF4150. If your Canon multi-function scanner has suddenly stopped working and won't scan, and you're troubleshooting error messages like "Unable to open TWAIN source", "Cannot open TWAIN source", "Source initialization failed" on trying to scan, here's an easy solution to the problem that's worth trying.
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