ImageCLASS MF641Cw Printer Will Not Scan

[ESP1138]

ImageClass MF641Cw printer tells me to connect the computer before scanning.  I had this printer since last year.  No major problems until recently.  I use the WiFi to connect to the computer.  The machine can print perfectly, yet it cannot scan.  I also cannot scan to USB.  

I tried the Canon Printer Assistant.  It showed that the signal strength is 0%.  How can this be possible?  

The printer can receive data from the Windows computer but not send.  It suggests to move the printer or the router closer.  Neither have worked.

[amka]

I'm experiencing the same issue, I have just bought a new laptop with windows 11 pro installed. I can print wirelessly but can not scan. It shows error message "Cannot communicate with the scanner. The cable may be disconnected, or the scanner may be turned off." This same error message also displays when I'm using the printer directly to scan to computer.

Canon team, please resolve this issue asap.