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Download drivers, software, firmware and manuals for your Canon product and get access to online technical support resources and troubleshooting. We use cookies to provide you with the best possible experience in your interactions with Canon and on our website – find out more about our use of Cookies and change your cookie settings here. Download Canon MF4320-4350 UFRII / UFRII LT Windows Drivers Support. A UFR II print driver is a Canon proprietary driver that stands for “Ultra Fast Rendering II.”.
A member here asked for the instructions I received from Canon on how to fix the scanner issue. Note that I had added/removed the drivers afew times and lost track of what was done during the phone calls. In addition, this was in 2/2016 and it is possible that Canon added on a new driver to resolve this. It was a little involved which was why I recommend emailing Canon directly. Below is what I did to fix the issue and their 2/3/16 response.
'Since you have already uninstalled the drivers and MF Toolbox then downloaded and installed the Windows 10 drivers and MF Toolbox from the Recommended Downloads section on our web site, then changing a setting in Windows 10 should restore your ability to scan. Please follow the steps below:
1. Right click the Windows Start button and select Run.
2. Enter (services.msc) without the parenthesis.
3. Scroll down look for Windows Image Acquisition (WIA).
4. Right click on it, then select Properties.
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5. Select the 'Log On' tab.
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6. Select the radio button for “Local System account”.
7. Check the box for “Allow service to interact with desktop”.
8. Click OK.'