imageCLASS MF644Cdw Scanner - inconsistent working

[cbitterfield]

I get this error message more often than not:

Cannot communicate with any of the scanners.

The scanners may not be connected, or may be turned off.

The OS is 10.14 OSX - However the problem has existed is 10.10

This is a new machine; new configuration (not transferred or upgraded).

The firmware is upgraded. I reset the printer 644cdw to factory and reconfigured.

The Wifi is in the same room less than 10' away. It's a new DECO x75 Pro (2.4, 5, and 6GHz). The IP address is fixed with a reservation. I have set the network settings in the software to the IP and the Bonjour address.

I can scan with the iOS business print. I can print. I can access the UI and the UI says scanning is available. Scanner works locally and via iOS app. 

What am I missing here? The printer is on 2.4GHz, the Mac Book Pro (M3) is on 5ghz and 6HZ. IPs work no firewalls. Sometimes this works and sometimes it doesn't

[Hector]

Hello,

If you are able to print and scan consistently from other device and only have the issue when scanning from the Mac, it will usually point to a network communication issue or security or a service on the computer is causing interference. In this situation I would suggest contacting support over the phone at 1-800-652-2666. They can check what is causing the communication issue.