SOURCE: Canon MP250 printer scanner in a canning mode
Go to Device Manager at USB Controllers and disable Standard Enhaced PCI to USB Host Controller. If you can't find exactly this, disable the one with the word Enhaced in it. Right click it then click disable.
SOURCE: I have a canon mp250
ive been resolving that issue for almost 8 hours since last night.(that means i did not sleep) because i badly need to scan papers for my precentation today. finally it worked after unstalling all canon folders, then reinstall everything... hope this work with you
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