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

circusboy
Occasional Contributor

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!

1 ACCEPTED SOLUTION

Hello.

 

Try the following adjustment to see if we can resolve this issue:

 

1.  Go to the Home menu or press the Home button.
2.  Select the Setup icon.  This icon looks like a gear.
3.  Select Device Settings.
4.  Select LAN Settings.
5.  Select Wi-Fi.
7.  Select Settings.
8.  Select Advanced.
9.  Select TCP/IP settings.
10. Select IPv6.  If you see a Yes or No question, choose Yes.
11. Select Enable/disable IPv6.
12. Choose Disable.

13. Once this has been done, turn the printer off and back on.

 

Next, close any applications that are open on the Mac and perform the following:

 

1.  Click the Apple and choose System Preferences.  Then open the Printer and Scanners menu.
2.  Highlight and delete any copies of the Canon Printer listed on the left by clicking the minus (-) sign.
3.  Click the plus (+) sign and look for an option that says "Add printer or scanner".  Click this option when you see it.
4.  In the next window, click Default on the upper left corner.  Wait a few moments, then highlight the Bonjour version of the printer.   

5.  Click Add at the bottom when it becomes available.

 

Once the printer has been added, try accessing the "scan" tab in system preferences and see if the scanner can be opened.  If the error persists, we would have to advise that you contact Apple to determine why the AirPrint scanner cannot be accessed, or scan from a different Mac/Windows computer or from an iOS/Android device with the Canon PRINT Inkjet/SELPHY app.

Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

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21 REPLIES 21

shadowsports
Esteemed Contributor

Greetings,

Your product is supported under Catalina OS, but does not include full support like it had under Mojave.

 

https://www.usa.canon.com/internet/portal/us/home/support/details/printers/inkjet-multifunction/ts-s...

 

Select the software tab and download the IJ Utilities for printing and scanning.  

 

I suggest you uninstall the printer and/or all of its software first (and restart) before runnin the new applications.  If you try to install them over what you have now, the issue will persist.

~Rick
Bay Area - CA
~6D2(v1.1.0) ~Many Lenses ~DxO PhotoLab Elite ~Windows10 Pro ~EVGA RTX 2080 FTW3 Ultra ~ImageClass MF644Cdw

circusboy
Occasional Contributor

Rick,

Thank you for the reply. I followed your advice, and when it still didn't work, went further, trying multiple times and variations. Finally, I did the following:

  • Reset (delete) all printers in System Preferences
  • Rebooted computer
  • "Reset All" on the TS8220 (factory default)
  • Unplugged, replugged TS8220 (after 1 minute+)
  • Followed the link (URL) to Canon Setup which
    • Re-installed IJ Network Device Setup Utility, IJ Scan Utility, and Inkjet Extended Survey Program
  • Running Setup discovered the TS8220, configured it for the network, and added it to System Preferences
  • The printer again works
  • The scanner produces the same "failed to open a connection..." error

I can only assume that scanning is one of the TS8220 features not supported by Canon under Catalina.

Colin

Hello Colin,

 

The scanner should work on the Catalina operating system. If you are able to print but get the (-21345) error when you scan, you can try turning off the Mac default firewall or any other third party firewalls running on the Mac and trying to scan again.

 

If you are still unable to scan, you can try scanning from the Mac's default Image Capture software using the steps below.

 

  1. Click on the apple in the upper left hand corner of the screen and then click on system preferences.
  2. In system preferences click on Printers and Scanners.
  3. Highlight the TS8220 and then click on the scan tab at the top of the window.
  4. Click on the option to open the scanner.
  5. Click on the option for overview to preview what is on the glass and then click scan.

Did this answer your question? Please click the Accept as Solution button so that others may find the answer as well.

 

circusboy
Occasional Contributor

Hector,

Thank you for the reply, and I also expected the scanner to work, since it had worked previously and the printer continues to work well. Thank you for your suggestion, but no, it did not answer the question. Before posting the problem, I have tried scanning from the IJ Scan Utility, Image Capture, and System Preferences->Printers & Scanners->Scan->Open Scanner. All of them fail with the (-21345) error. I just tried them again, with the same results (print successful, scan failed).

 

Below is an excerpt from the log. The confusing part is that AirScanScanner reports connect failure as "Network is down", although the printer functions well, and the IJ Network Setup Utility locates and sets up the TS8220 every time it is run.

 

default 07:14:59.953695-0500 AirScanScanner FRONTLOGGING: version 1
default 07:14:59.953712-0500 AirScanScanner Registering, pid=47741
default 07:14:59.954647-0500 AirScanScanner CHECKIN: pid=47741
default 07:14:59.960228-0500 AirScanScanner CHECKEDIN: pid=47741 asn=0x0-0x103103 foreground=0
default 07:14:59.976728-0500 AirScanScanner Registered, pid=47741 ASN=0x0,0x103103
default 07:14:59.976840-0500 AirScanScanner Registered, pid=47741 cgConnectionID=7374f
default 07:14:59.978220-0500 AirScanScanner Current system appearance, (HLTB: 1), (SLS: 0)
default 07:14:59.980865-0500 AirScanScanner Post-registration system appearance: (HLTB: 1)
default 07:14:59.997982-0500 AirScanScanner Registering for test daemon availability notify post.
default 07:14:59.998085-0500 AirScanScanner notify_get_state check indicated test daemon not ready.
default 07:15:00.003004-0500 AirScanScanner SignalReady: pid=47741 asn=0x0-0x103103
default 07:15:00.003420-0500 AirScanScanner SIGNAL: pid=47741 asn=0x0x-0x1061123
default 07:15:00.022460-0500 AirScanScanner icdevice | --> Received Launch Params
default 07:15:00.023746-0500 AirScanScanner icdevice | LaunchParams Received For: 0x00000000
default 07:15:00.023833-0500 AirScanScanner icdevice | Resolving for: Canon TS8200 series:_uscan._tcp.:local.
default 07:15:00.453161-0500 AirScanScanner icdevice | Opening Connection: 192.168.1.20:80
default 07:15:01.426486-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:01.426865-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:01.431683-0500 AirScanScanner -[SOConfigurationClient init] on <private>
default 07:15:01.431883-0500 AirScanScanner <SOServiceConnection: 0x600001ce6800>: new XPC connection
default 07:15:01.449345-0500 AirScanScanner Connection 1: starting, TC(0x0)
default 07:15:01.449500-0500 AirScanScanner [C1 2FED272D-EB6A-4CC9-9FCD-BCB29D4EC6B6 IPv6#afef9841.80 tcp, url hash: ] start
default 07:15:01.449754-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state waiting
default 07:15:01.449851-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state failed error Network is down
default 07:15:01.449882-0500 AirScanScanner Task <FF4C75EE-5A92-4F2A-B2AC-EC19460914DC>.<0> setting up Connection 1
default 07:15:01.449896-0500 AirScanScanner Connection 1: is waiting to connect, reason -1
error 07:15:01.449906-0500 AirScanScanner Connection 1: received failure notification
error 07:15:01.449918-0500 AirScanScanner Connection 1: failed to connect 1:50, reason -1
error 07:15:01.449927-0500 AirScanScanner Connection 1: encountered error(1:50)
default 07:15:01.449934-0500 AirScanScanner Connection 1: is being canceled
default 07:15:01.449961-0500 AirScanScanner Connection 1: summary for unused connection {protocol="(null)", domain_lookup_duration_ms=0, connect_duration_ms=0, secure_connection_duration_ms=0, idle_duration_ms=0}
default 07:15:01.450004-0500 AirScanScanner [C1 2FED272D-EB6A-4CC9-9FCD-BCB29D4EC6B6 IPv6#afef9841.80 tcp, url hash: ] cancel
default 07:15:01.450031-0500 AirScanScanner [C1 IPv6#afef9841.80 tcp, url hash: ] cancelled
default 07:15:01.450053-0500 AirScanScanner 0.000s [C1 4C3297B6-3ED9-4A54-AF94-3D8DF6902C06 IPv6#afef9841.80 path path=unsatisfied (No network route), dns] path:start
default 07:15:01.450071-0500 AirScanScanner 0.000s [C1 4C3297B6-3ED9-4A54-AF94-3D8DF6902C06 IPv6#afef9841.80 path path=unsatisfied (No network route), dns] path:unsatisfied
default 07:15:01.450083-0500 AirScanScanner 0.000s [C1] path:cancel
default 07:15:01.450175-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state cancelled
default 07:15:01.450417-0500 AirScanScanner Task <FF4C75EE-5A92-4F2A-B2AC-EC19460914DC>.<0> can retry(N) with reason(2) for error [1:50]
default 07:15:01.450571-0500 AirScanScanner _CFNetworkIsConnectedToInternet returning 1, flagsValid: 1, flags: 0x2
error 07:15:01.450581-0500 AirScanScanner Task <FF4C75EE-5A92-4F2A-B2AC-EC19460914DC>.<0> HTTP load failed, 0/0 bytes (error code: -1009 [1:50])
error 07:15:01.450622-0500 AirScanScanner NSURLConnection finished with error - code -1009
default 07:15:01.453094-0500 AirScanScanner Task <FF4C75EE-5A92-4F2A-B2AC-EC19460914DC>.<0> summary for task failure {transaction_duration_ms=4, response_status=0, connection=1, reused=1, request_start_ms=0, request_duration_ms=0, response_start_ms=0, response_duration_ms=0, request_bytes=0, response_bytes=0, cache_hit=0}
default 07:15:01.453248-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:01.453253-0500 AirScanScanner icdevice | Cleanup
error 07:15:01.453270-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:01.453280-0500 AirScanScanner icdevice | Cleanedup/Closed Device: 0x 0
default 07:15:01.453289-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:01.453366-0500 AirScanScanner icdevice | Canceling Outstanding Activity
default 07:15:01.453428-0500 AirScanScanner icdevice | Quitting With Reason: Open Device Failed
default 07:15:01.453488-0500 AirScanScanner icdevice | Invalidating XPC Listener
default 07:15:01.453506-0500 AirScanScanner icdevice | Invalidating ICDD Endpoint
default 07:15:01.453525-0500 AirScanScanner icdevice | Invalidating Client(s) Endpoint
default 07:15:01.453634-0500 AirScanScanner icdevice | Terminated
default 07:15:09.988894-0500 AirScanScanner FRONTLOGGING: version 1
default 07:15:09.988909-0500 AirScanScanner Registering, pid=47742
default 07:15:09.989770-0500 AirScanScanner CHECKIN: pid=47742
default 07:15:09.994378-0500 AirScanScanner CHECKEDIN: pid=47742 asn=0x0-0x104104 foreground=0
default 07:15:10.009430-0500 AirScanScanner Registered, pid=47742 ASN=0x0,0x104104
default 07:15:10.009540-0500 AirScanScanner Registered, pid=47742 cgConnectionID=88213
default 07:15:10.010971-0500 AirScanScanner Current system appearance, (HLTB: 1), (SLS: 0)
default 07:15:10.013854-0500 AirScanScanner Post-registration system appearance: (HLTB: 1)
default 07:15:10.028331-0500 AirScanScanner Registering for test daemon availability notify post.
default 07:15:10.028434-0500 AirScanScanner notify_get_state check indicated test daemon not ready.
default 07:15:10.032835-0500 AirScanScanner SignalReady: pid=47742 asn=0x0-0x104104
default 07:15:10.033396-0500 AirScanScanner SIGNAL: pid=47742 asn=0x0x-0x1065220
default 07:15:10.053997-0500 AirScanScanner icdevice | --> Received Launch Params
default 07:15:10.055711-0500 AirScanScanner icdevice | LaunchParams Received For: 0x00000000
default 07:15:10.055830-0500 AirScanScanner icdevice | Resolving for: Canon TS8200 series:_uscan._tcp.:local.
default 07:15:10.085262-0500 AirScanScanner icdevice | Opening Connection: 192.168.1.20:80
default 07:15:11.063457-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:11.063838-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:11.069061-0500 AirScanScanner -[SOConfigurationClient init] on <private>
default 07:15:11.069256-0500 AirScanScanner <SOServiceConnection: 0x600003049760>: new XPC connection
default 07:15:11.086728-0500 AirScanScanner Connection 1: starting, TC(0x0)
default 07:15:11.086867-0500 AirScanScanner [C1 13AB418A-D389-4541-9E00-1DD829B38701 IPv6#ca4d4fdd.80 tcp, url hash: ] start
default 07:15:11.087115-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state waiting
default 07:15:11.087196-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state failed error Network is down
default 07:15:11.087223-0500 AirScanScanner Task <AE66D403-CC66-40F5-9D30-FB48694E0805>.<0> setting up Connection 1
default 07:15:11.087236-0500 AirScanScanner Connection 1: is waiting to connect, reason -1
error 07:15:11.087246-0500 AirScanScanner Connection 1: received failure notification
error 07:15:11.087259-0500 AirScanScanner Connection 1: failed to connect 1:50, reason -1
error 07:15:11.087266-0500 AirScanScanner Connection 1: encountered error(1:50)
default 07:15:11.087275-0500 AirScanScanner Connection 1: is being canceled
default 07:15:11.087287-0500 AirScanScanner Connection 1: summary for unused connection {protocol="(null)", domain_lookup_duration_ms=0, connect_duration_ms=0, secure_connection_duration_ms=0, idle_duration_ms=0}
default 07:15:11.087313-0500 AirScanScanner [C1 13AB418A-D389-4541-9E00-1DD829B38701 IPv6#ca4d4fdd.80 tcp, url hash: ] cancel
default 07:15:11.087335-0500 AirScanScanner [C1 IPv6#ca4d4fdd.80 tcp, url hash: ] cancelled
default 07:15:11.087408-0500 AirScanScanner 0.000s [C1 EE188D66-F910-42E5-8EAC-A53995D07281 IPv6#ca4d4fdd.80 path path=unsatisfied (No network route), dns] path:start
default 07:15:11.087430-0500 AirScanScanner 0.000s [C1 EE188D66-F910-42E5-8EAC-A53995D07281 IPv6#ca4d4fdd.80 path path=unsatisfied (No network route), dns] path:unsatisfied
default 07:15:11.087444-0500 AirScanScanner 0.000s [C1] path:cancel
default 07:15:11.087506-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state cancelled
default 07:15:11.087730-0500 AirScanScanner Task <AE66D403-CC66-40F5-9D30-FB48694E0805>.<0> can retry(N) with reason(2) for error [1:50]
default 07:15:11.087881-0500 AirScanScanner _CFNetworkIsConnectedToInternet returning 1, flagsValid: 1, flags: 0x2
error 07:15:11.087897-0500 AirScanScanner Task <AE66D403-CC66-40F5-9D30-FB48694E0805>.<0> HTTP load failed, 0/0 bytes (error code: -1009 [1:50])
error 07:15:11.087929-0500 AirScanScanner NSURLConnection finished with error - code -1009
default 07:15:11.090400-0500 AirScanScanner Task <AE66D403-CC66-40F5-9D30-FB48694E0805>.<0> summary for task failure {transaction_duration_ms=4, response_status=0, connection=1, reused=1, request_start_ms=0, request_duration_ms=0, response_start_ms=0, response_duration_ms=0, request_bytes=0, response_bytes=0, cache_hit=0}
default 07:15:11.090557-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:11.090574-0500 AirScanScanner icdevice | Cleanup
error 07:15:11.090579-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:11.090600-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:11.090621-0500 AirScanScanner icdevice | Cleanedup/Closed Device: 0x 0
default 07:15:11.090707-0500 AirScanScanner icdevice | Canceling Outstanding Activity
default 07:15:11.090776-0500 AirScanScanner icdevice | Quitting With Reason: Open Device Failed
default 07:15:11.090846-0500 AirScanScanner icdevice | Invalidating XPC Listener
default 07:15:11.090873-0500 AirScanScanner icdevice | Invalidating ICDD Endpoint
default 07:15:11.090895-0500 AirScanScanner icdevice | Invalidating Client(s) Endpoint
default 07:15:11.091032-0500 AirScanScanner icdevice | Terminated
default 07:15:20.021534-0500 AirScanScanner FRONTLOGGING: version 1
default 07:15:20.021550-0500 AirScanScanner Registering, pid=47751
default 07:15:20.022583-0500 AirScanScanner CHECKIN: pid=47751
default 07:15:20.027601-0500 AirScanScanner CHECKEDIN: pid=47751 asn=0x0-0x105105 foreground=0
default 07:15:20.045464-0500 AirScanScanner Registered, pid=47751 ASN=0x0,0x105105
default 07:15:20.045577-0500 AirScanScanner Registered, pid=47751 cgConnectionID=ffb2f
default 07:15:20.046963-0500 AirScanScanner Current system appearance, (HLTB: 1), (SLS: 0)
default 07:15:20.049760-0500 AirScanScanner Post-registration system appearance: (HLTB: 1)
default 07:15:20.066826-0500 AirScanScanner Registering for test daemon availability notify post.
default 07:15:20.066941-0500 AirScanScanner notify_get_state check indicated test daemon not ready.
default 07:15:20.072624-0500 AirScanScanner SignalReady: pid=47751 asn=0x0-0x105105
default 07:15:20.073129-0500 AirScanScanner SIGNAL: pid=47751 asn=0x0x-0x1069317
default 07:15:20.096390-0500 AirScanScanner icdevice | --> Received Launch Params
default 07:15:20.098156-0500 AirScanScanner icdevice | LaunchParams Received For: 0x00000000
default 07:15:20.098294-0500 AirScanScanner icdevice | Resolving for: Canon TS8200 series:_uscan._tcp.:local.
default 07:15:20.126436-0500 AirScanScanner icdevice | Opening Connection: 192.168.1.20:80
default 07:15:21.105304-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:21.105705-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:21.110166-0500 AirScanScanner -[SOConfigurationClient init] on <private>
default 07:15:21.110353-0500 AirScanScanner <SOServiceConnection: 0x6000034d50e0>: new XPC connection
default 07:15:21.127789-0500 AirScanScanner Connection 1: starting, TC(0x0)
default 07:15:21.127928-0500 AirScanScanner [C1 F72379F0-72B1-4050-B48A-1447A52E2B11 IPv6#82114a6e.80 tcp, url hash: ] start
default 07:15:21.128170-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state waiting
default 07:15:21.128252-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state failed error Network is down
default 07:15:21.128277-0500 AirScanScanner Task <7756DBE1-580F-43B0-BCBF-1AFE7F5A610D>.<0> setting up Connection 1
default 07:15:21.128290-0500 AirScanScanner Connection 1: is waiting to connect, reason -1
error 07:15:21.128300-0500 AirScanScanner Connection 1: received failure notification
error 07:15:21.128314-0500 AirScanScanner Connection 1: failed to connect 1:50, reason -1
error 07:15:21.128321-0500 AirScanScanner Connection 1: encountered error(1:50)
default 07:15:21.128357-0500 AirScanScanner Connection 1: is being canceled
default 07:15:21.128427-0500 AirScanScanner Connection 1: summary for unused connection {protocol="(null)", domain_lookup_duration_ms=0, connect_duration_ms=0, secure_connection_duration_ms=0, idle_duration_ms=0}
default 07:15:21.128453-0500 AirScanScanner [C1 F72379F0-72B1-4050-B48A-1447A52E2B11 IPv6#82114a6e.80 tcp, url hash: ] cancel
default 07:15:21.128473-0500 AirScanScanner [C1 IPv6#82114a6e.80 tcp, url hash: ] cancelled
default 07:15:21.128493-0500 AirScanScanner 0.000s [C1 4F92D5B1-3999-44DA-BD66-89C97F8A86E5 IPv6#82114a6e.80 path path=unsatisfied (No network route), dns] path:start
default 07:15:21.128509-0500 AirScanScanner 0.000s [C1 4F92D5B1-3999-44DA-BD66-89C97F8A86E5 IPv6#82114a6e.80 path path=unsatisfied (No network route), dns] path:unsatisfied
default 07:15:21.128521-0500 AirScanScanner 0.000s [C1] path:cancel
default 07:15:21.128623-0500 AirScanScanner nw_connection_report_state_with_handler_on_nw_queue [C1] reporting state cancelled
default 07:15:21.128850-0500 AirScanScanner Task <7756DBE1-580F-43B0-BCBF-1AFE7F5A610D>.<0> can retry(N) with reason(2) for error [1:50]
default 07:15:21.128988-0500 AirScanScanner _CFNetworkIsConnectedToInternet returning 1, flagsValid: 1, flags: 0x2
error 07:15:21.128998-0500 AirScanScanner Task <7756DBE1-580F-43B0-BCBF-1AFE7F5A610D>.<0> HTTP load failed, 0/0 bytes (error code: -1009 [1:50])
error 07:15:21.129031-0500 AirScanScanner NSURLConnection finished with error - code -1009
default 07:15:21.131505-0500 AirScanScanner Task <7756DBE1-580F-43B0-BCBF-1AFE7F5A610D>.<0> summary for task failure {transaction_duration_ms=4, response_status=0, connection=1, reused=1, request_start_ms=0, request_duration_ms=0, response_start_ms=0, response_duration_ms=0, request_bytes=0, response_bytes=0, cache_hit=0}
default 07:15:21.131676-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:21.131695-0500 AirScanScanner icdevice | Cleanup
error 07:15:21.131707-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:21.131716-0500 AirScanScanner icdevice | Cleanedup/Closed Device: 0x 0
default 07:15:21.131726-0500 AirScanScanner com.apple.AirScan: <private>
default 07:15:21.131819-0500 AirScanScanner icdevice | Canceling Outstanding Activity
default 07:15:21.131905-0500 AirScanScanner icdevice | Quitting With Reason: Open Device Failed
default 07:15:21.131972-0500 AirScanScanner icdevice | Invalidating XPC Listener
default 07:15:21.131999-0500 AirScanScanner icdevice | Invalidating ICDD Endpoint
default 07:15:21.132018-0500 AirScanScanner icdevice | Invalidating Client(s) Endpoint
default 07:15:21.132138-0500 AirScanScanner icdevice | Terminated

Hello.

 

Try the following adjustment to see if we can resolve this issue:

 

1.  Go to the Home menu or press the Home button.
2.  Select the Setup icon.  This icon looks like a gear.
3.  Select Device Settings.
4.  Select LAN Settings.
5.  Select Wi-Fi.
7.  Select Settings.
8.  Select Advanced.
9.  Select TCP/IP settings.
10. Select IPv6.  If you see a Yes or No question, choose Yes.
11. Select Enable/disable IPv6.
12. Choose Disable.

13. Once this has been done, turn the printer off and back on.

 

Next, close any applications that are open on the Mac and perform the following:

 

1.  Click the Apple and choose System Preferences.  Then open the Printer and Scanners menu.
2.  Highlight and delete any copies of the Canon Printer listed on the left by clicking the minus (-) sign.
3.  Click the plus (+) sign and look for an option that says "Add printer or scanner".  Click this option when you see it.
4.  In the next window, click Default on the upper left corner.  Wait a few moments, then highlight the Bonjour version of the printer.   

5.  Click Add at the bottom when it becomes available.

 

Once the printer has been added, try accessing the "scan" tab in system preferences and see if the scanner can be opened.  If the error persists, we would have to advise that you contact Apple to determine why the AirPrint scanner cannot be accessed, or scan from a different Mac/Windows computer or from an iOS/Android device with the Canon PRINT Inkjet/SELPHY app.

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circusboy
Occasional Contributor

Michael, it worked! The log message traffic is substantial, and substantially different, but it successfully connected and scanned.

 

It boggles the mind that you identified something as esoteric as IPv6, as being the problem, particularly since it functioned fine with Mojave. Your instructions were clear, complete, and well-formated.

 

Thank you again, and I will add Kudos and Accept as Solution.

Colin

 

I tried all of the advice and my scanner still won't work. It was working and then suddenly quit.

Under WiFi Settings, I do not have an advanced setting. 

circusboy
Occasional Contributor

WhoGivesAJack, on Catalina 10.15.7, try selecting

  • Settings
  • Network
  • Select your "Connected" network type  e.g. "WiFi"
  • Select Advanced (lower right corner)
  • Select TCP/IP (tab on the top)
  • Select "Configure IPv6" and choose "off"

Reboot to ensure the change is active.

 

Note: if using a network type of VPN (e.g. ExpressVPN) , instead of straight WiFi, Bluetooth, or Ethernet network type, you will not see the Advanced option.