Windows 10: Windows Defender Firewall is blocking printing

Discus and support Windows Defender Firewall is blocking printing in Windows 10 Network and Sharing to solve the problem; I have a Canon LBP 5050N printer on my LAN at a fixed IP address 192.168.0.10. This is a new PC running Windows 10 Build 19041 i.e. the latest, May... Discussion in 'Windows 10 Network and Sharing' started by RoyGrubb, Jul 2, 2020.

  1. RoyGrubb Win User

    Windows Defender Firewall is blocking printing


    I have a Canon LBP 5050N printer on my LAN at a fixed IP address 192.168.0.10. This is a new PC running Windows 10 Build 19041 i.e. the latest, May edition.

    Windows Defender Firewall is blocking printing. If I turn WDF off for private networks, printing operates.

    I've looked at Advanced Settings > Monitoring > Firewall and in the long list of entries I've looked at the 8 Blocked ones. All relate to Public networks, none of these have any relevant name for printer spooling. But there are entries for Canon CAPT Port and Canon Printer, all of which seem to allow pass-through:

    Name Profile Action Override Direction Program Local Address Remote AddressProtocol Local Port Remote Port Authorized UsersAuthorized Computers Authorized Local Principals Local User Owner Application Package Group Status
    Canon CAPT Port Public Allow NoInbound Any Any Any UDP50366 Any Any Any AnyAny Any OK
    Canon CAPT Port Public Allow NoInbound Any Any Any UDP51985 Any Any Any AnyAny Any OK
    Canon CAPT Port Private Allow NoInbound Any Any Any UDP55663 Any Any Any AnyAny Any OK
    Canon printer All Allow No Inbound Any Any Any UDP3756 Any Any Any AnyAny Any OK


    I have not made any manual adjustments to WDF other than to turn it off to allow printing and then turn it back on again.


    How do I give the Spooler SubSystem permission to pass through the WDF?


    Thanks

    :)
     
    RoyGrubb, Jul 2, 2020
    #1
  2. Arctucas Win User

    Windows Firewall blocking websites

    I have blocked IP addresses, e.g. 255.255.255.255, not URLs, e.g. somewebsite.co m.

    As far as unblocking, look at your Windows Firewall rules. Do you see anything that is blocked? If you do, click on the Scope tab and see what is listed there.
     
    Arctucas, Jul 2, 2020
    #2
  3. dw85745 Win User
    Print Windows Firewall App List

    Sadly, M$ never seems to make available the ability to dump its listing to a printer or better yet an Excel or Word file.

    Anyone know how -- of if possible - to print or send the Windows Defender Firewall Apps listed to a printer or Excel ?
     
    dw85745, Jul 2, 2020
    #3
  4. Windows Defender Firewall is blocking printing

    Best free AV and firewall

    Can Windows Firewall block outgoing connections yet? If not, it's one step above useless.

    Look into Online Armor for a free firewall.
     
    Deusxmachina, Jul 2, 2020
    #4
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Windows Defender Firewall is blocking printing

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