TS8220 Cannot scan "failed to open a connection to the device (-21345)" MacOS Catalina

[circusboy]

Using MacOS Catalina (10.15.6) the TS8220 prints correctly, but attempting to scan gives "failed to open a connection to the device (-21345)". The TS8220 has current firmware (1.010), is in same room 3' from router and 8' from iMac, on same 2G network.The scanner previously worked before upgrade to Catalina.

• Using MacOS System Preferences -> Printers & Scanners the "Print" connects and can open print queue and show supply levels etc.
• The "Scan" Open Scanner gives the "failed to open a connection..." error.
• I have tried both MacOS Image Capture and Canon IJ Scan Utility Lite.
  
  • MacOS gives the "failed..." error
  • IJ Scan gives "Cannot communicate with scanner..."
• I do not have a USB cable long enough to connect directly (and need to use wifi scanning)

Suggestions what else to try or is there already a solution?? Thank you!

[Patrick]

Hi ptetreault,

What model printer do you own?

[ptetreault]

Canon mg5320

need to link to OS big sur

[edwardek]

Since Mac's do not have a HOME MENU, your instructions are not relevant 

[kroser]

This fix worked for me with my MacOS Catalina and a TR8620a.  From what I gather reading these replies, either you need to enable IPV6 on your computer or turn it off on the printer.

[DaveHorner]

This has just solved the same issue which I had with my new CanonTS8351A on MacOs Monterey. I followed the instructions to disable IPV6 and the scanning is now working fine.  Thanks very much.

[Landmine7274]

Made an account just to say this fixed my issue on macos 12.6

Thank you!

[Tedster05]

Worked for me - many thanks

[Stephen]

The home button on the printer. 

[Nema]

I'm from Latin America and then y did that. 
I reboot my router and al WORKS.

Thanks Very Much

[LCOS56]

Thanks a lot for your suggestion. It worked fine for me (iMac (Retina 5K, 27-inch, Late 2014); macOS Big Sur 11.7.4).