Microsoft Releases Fix For Scanning Issues After Windows 11 24H2 Is Applied - KB5048667

[shadowsports]

EDIT - See this thread.  Several have reported a working fix.

https://community.usa.canon.com/t5/Printer-Software-Networking/Fix-For-MF-Scan-Utility-Failures-Wind...

Greetings,

Microsoft has released a patch which is said to address the scanning failures windows 11 users are experiencing after feature release 24H2 is applied.  Many people have reported issues using ScanGear and the MF Scan Utility. 

KB5048667 should download automatically from Windows Update.  If you want to apply the patch manually, you can visit the Windows Update Catalog, download the run the patch yourself. 

https://www.catalog.update.microsoft.com/Search.aspx?q=KB5048667

After applying the update, restart your system and test scanning.

Please post your results for others.

[sukinakaze]

Patch applied but still no luck.  ☹️
I have a MF4770n.

[LietotajsLV]

The issue is still not resolved by any of the patches issued by Microsoft. Not the ~667 one and not by the .NET patch some are speculating about. 

Tested for countless hours in the recent days and still having issues. Identical system of Windows 11 23H2 works, but on clean installed Windows 11 24H2 it does not work no matter what tricks we have tried on 100s of Canon printers, mostly C1127i, C1333i, MF744Cdw, MF443dw, MF463dw, even some older MF411dw across multiple organizations and multiple IT admins. 
I am 100% sure and tested its nothing to do with some policies or security software, as those printers (with latest FW, checked) does not connect to scanner even on multiple of my personal devices which are clean installed, and also tried multiple 24H2 VMs - same error "Cannot communicate with the scanner".

Tried everything, even disabling firewall, making sure services are working and even comparing registry keys between 24H2 and 23H2 installs to find out whats wrong with 24H2. 

Maybe there is someone here who can actually get a real human at Canon to look into this, as the support does not understand this and wants to exchange the device instead, but it's not the device issue, it's a software issue. Hundreds of new PCs are stalling because users cannot scan documents from MF Scan Utility or even from the printer LCD when clicking send to PC, it does not connect and gives an error. 

[MilwNick23]

Everything mentioned above is exactly my issue too (MF410).

[ejnewman]

Same issue for me.  Patch installed.  Same error everyone is posting.  Mine is an ImageClass MF733 Cdw. -Evan

[splitpear]

Issue remains on a clean 24H2 install that has these KBs installed.

[ejnewman]

Has anyone tried this?  https://support.usa.canon.com/kb/s/article/ART180855

[MilwNick23]

My printer isn't connected via USB cable as discussed in the above article you mentioned, HOWEVER, it should be noted that I had previously attempted scanning with a USB cable after initial scanning failure, but that too failed.

[bobscherer]

Have 3 PC's here, 2 laps, 1 desk.  All 3 already had the 24h2 update already installed (12/10/24).  None will connect to the Canon scanner (printing is fine). I also removed the 24H2 and tried scanner - no-go.

Uninstalled win update, re-installed it.  Uninstalled the canon drivers & re-installed.  No change in symptoms

Curious is that we also have a monochrome "Brother" printer/scanner. 1 laptop will scan when initiated from the printer, but not from the PC. Neither of the other 2 will connect to the Brother either.

Both printer/scanners had been working with the 3 PC's for quite some time. The desk & 1 laptop were recently refreshed software wise - fresh win11 & apps re-installed.

I'm convinced it is a MS Windows issue - hope it get resolved SOON!

Bob

[MilwNick23]

As soon as I reinstalled a disk image I had just recently made before upgrading 23H2 to 24H2 the scanner worked again, so 100000000% guarantee it is yet another Windows F-UP in 24H2