Hello etp,
Since you are no longer able to scan with the MF Scan Utility after Microsoft performed an update, I suggest you uninstall the current drivers and MF Scan Utility scanning software then download and reinstall the drivers and updated MF Scan Utility from our web site to resolve your issue. Since there is limiation on characters in the forum, click HERE to view the steps to uninstall and resinstall from our web site (disregard the section about the Patch for Network Scan, USB Scan, this is for other models).
Also, to scan double sided, you would check the box "Scan both sides when scanning from the feeder" in Scan options of the MF Scan Utility. Click HERE for an example.
If you need immediate assistance and you're in the USA, please click http://Canon.us/ContactCF for our US-based support. If you're outside of the US, please click http://Canon.us/4xf7 for support options.
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