Hi vmurrell!
Please verify that the MF249dw is selected in the MF Network Scan Utility by following the steps below:
1. Click
in the system tray.

2. Select the check box for the machine, and click [OK].
After verifying this information, please scan a document.
If you still experience an issue with the scanning function, or are unable to located the MF Network Scan Utility, please call us at 1-800-OK-CANON (1-800-652-2666) for further assistance.