imageCLASS MF4770n will not scan on new Windows 11 installation

[Bill_W]

I have several Windows 11 machines running the  24h2 version. I have a venerable MF4770n. Two Windows machines were upgraded from Windows 10. Two have fresh installs. I can scan fine on the upgraded machines but not fresh installs. This is thru the local network not USB. I get the “can not communicate with the scanner” error. I can print just fine. I suspected a firewall problem. If that’s it, it is too subtle for me.  I tried installing with the firewall down. I opened the firewall for every Canon app I can think of. 

My inconvenient Epson flatbed scans fine. 
Thought / Suggestion?

[LietotajsLV]

Same issue with every Canon MF office printer in our company too. Something legacy/security related changed with 24H2. We have tons of interruptions, as we have 100s of Canon MF devices on our network and none of them can scan with 24H2..

[shadowsports]

See this post.

https://community.usa.canon.com/t5/Office-Printers/Microsoft-Releases-Fix-For-Scanning-Issues-After-...