20 Feb

Canon Printer Error 306


When you attempt to print from your Canon Printer using a Mac, a message appears stating Error 306.


  1. Click the Apple icon in the top left of the screen.
  2. Click System Preferences.
  3. Click Print & Fax.
  4. If the padlock in the bottom left is locked:
    Click it, enter your password and click OK.
  5. Click the – button. to remove the printer and the + to add it again leaving the options on default..

91 Responses to Canon Printer Error 306

  1. Your solution solved my problem.


  2. THANK YOU. you totally just saved me from near nervous breakdown.

  3. Thanks! This just fixed my problem. Using Canon iP90 and 10.6.2 error 306. My picture would print about 1/2 before it stopped.

  4. NAILED IT! Good save! 🙂 My paper WILL get in on time!

  5. Didn't work for me. After I deleted the printer I couldn't add it back. When I click the + the printer is nowhere to be seen.

  6. ^ Using your Install DVD, Install printer drivers from the optional installer: http://support.apple.com/kb/HT3415

  7. Adi Hirschal June 17, 2011 at 08:57

    adi in austria loves your tip, macshield is gone, god bless you, you, thanks

  8. Thank you! A simple solution that WORKED!!

  9. totally fixed it.

  10. Merci beaucoup!! It helped a lot….

  11. Wonderful simple solution. Didnt even need to load new drivers. Thanks a whole lot!

  12. U kick butt…ty

  13. My problem was slightly different, my computer had created a “double” of my printer, so when the printer received its order to print, it was no longer recognized. I merely threw away the “double” and now everything works just fine. Thanks!

  14. Worked for me 2, thanks:)

  15. it works it works it works – thanks!!!

  16. Liana Demchenko November 15, 2011 at 23:02

    Hi! i have the same problem. I did as you said but it didn’t work. I ttried to install the printer once more again but it didn’t help. i don’t know what to do. Computer doesn’t find the printer after i deleted it by Fax and print.

    • Make sure it is connected correctly. Also, reinstall the printer from the CD or by finding the latest drivers on the Canon website.

  17. Thanks man, you’re a genious

  18. thanks heaps man……printer is workin fine now.

  19. Great – easy and worked!

  20. Thank you! Thank you!! Thank you!!!

  21. omg. you are a genius! thank you!!!

  22. moltes gràcies!!

  23. Thanks a lot, Appears to have solved the problem!!

  24. wow.. i was going through all the complicated methods to fix my printer. didn’t know this simple step could fix it just like that. thanks!

  25. thank you! I HATE printers

  26. Thank you! Worked perfectly.

  27. Have done this at least 5 times. Works for about 15 mins. What’s crazy is the other computer in the room is an Acer and NEVER loses the connection. WHY, APPLE, WHY?


  29. This worked!


  30. This worked, thank you! – simple yet effective

  31. Thanks, you’re great

  32. Awesome, thank you!

  33. Thanks! Your instructions were easy to follow and they worked.
    Printer is back to normal now.
    So happy I could QUACK!

  34. Thanks. I’m definitely no technoweenie so I need all the help I can get.

  35. What if the padlock on the bottom is already unlocked?

  36. Spent a long time with Apple support on this. Canon PIXMA Pro9000 fails with error code 306 when connected via Airport Express. Deleting/adding the printer works for a while, but then always see the same 306 failure again. Apple said this is a Canon problem, so I contacted Canon, who told me that the Pro9000 is not guaranteed to work when connected via wifi, only a direct USB connection will work. So much for this expensive printer and convenience.

  37. This worked! THANK YOU THANK YOU!! So happy right now.

  38. I can’t thank you enough!! This miraculously worked and now I can print my pictures again!

  39. Hi, I have the same problem, tried this solution and it still comes up with error 306.

    I’m trying to connect a canon printer MP280 to a mac (OSX 10.7.5) though a PC (windows 7). I can find the printer on my mac and connect it, but when i try to print it comes up with support code: 306. Is there anything else that you can suggest that i try?

  40. It worked even though the lock wasn’t engaged. Just want to inform those that think it might not work if they see an unlocked pad lock on the screen to go ahead and delete the printer and then add it. It worked for me.

  41. Thank you. You have also saved me from a nervous breakdown and saved a 5th grade science report.

  42. thank you, you’ve solved my problem

  43. Fantastic advice! Just tried this and it’s worked.Huge Thanks!

  44. Deleted printer but no way to add it again. I ‘searched’ for the printer and nothing. ??? Help!

    • David Henderson May 22, 2013 at 11:41

      Hi Shelby,
      You may need to try turning the printer off and back on again. or even unplug and plug it back in again. possibly try another port on the machine.
      Hope this helps

  45. ipod repair facts March 24, 2013 at 15:07

    I agree

  46. thanks mate!

  47. This worked, thanks very much!

  48. Guys just an FYI – just had this problem and went to the printer web pg and it turned out the wifi connection was the problem. Almost no signal – fixed the signal problem and now printing as normal so defo worth checking that out before going through the other dramas: how to find below:

    Settings – Printer – Options – Show printer webpage ….your printer wifi signal will show on the landing pg

  49. You are a legend thanks!

  50. THANKS!!!!

  51. FRustrated french teacher trying to print a worksheet! September 16, 2013 at 19:56

    Thank you, merci ,gracias, danke – I am sooooo grateful!

  52. Simple fix for me, when installing, in the Add Printer window, I inadvertently selected the Windows tab rather than the Default tab. I uninstalled and re-installed using the Default tab. Fixed.

  53. THANK YOU SO MUCH!!!!! You made my day!!

  54. Thank you. I bought a new modem and router. I was getting a 306 communication error. My MAC computer kept showing that printer was offline. I uninstalled like you suggested, put in my printer set up disk and followed the directions. Very simple and worked well. 🙂

  55. help!!!!!! i have a max OSX Lion 10.7.5 my canon MP210 printer has always worked fine until the last couple of months it comes up with an error 306 i have tried deleting and reading printer worked once and not again then i downloaded a new driver which worked for about 3 weeks and now it is coming up with the same ERROR 306 AGAIN!!! and i have tried to download a new driver but it is not working!! i am a uni student and need my printer to work!!1
    if you could please help me i would be so grateful thanks

  56. worked for me, thanks

  57. Thank you! This was so helpful. Fixed my problem.

  58. Thanks. Padlock wasn’t locked but I deleted the printer and re-added it and it worked. Strange…

  59. Great help! Thank you!

  60. thank you, your a life saver

  61. amazing. the sense of relief after 90 mins tryna figure this out! THANK YOU VERY MUCH!!!!!
    i deleted the printer.
    upon reconnecting the printer by USB, my mac recognized it and gave it the green light!

  62. Thank you, you saved me

  63. super! thanks!!

  64. Great i was stressing but olivia and u helped mwa!!

  65. Thank you so so so much for your help, I am truly grateful.

  66. Worked for me. Thanks!

  67. Simple! Worked! Thank you!

  68. My husband wanted to buy a new printer, but your instructions fixed the problem. Thank you!

  69. Ted in Charlotte September 14, 2015 at 20:38

    Great. My thanks too! Worked like a charm.

  70. Thank You, it worked! СПАСИБО )

  71. thank you, it solved my problem. 11/21/15

  72. lols i seriously must be the only person this didn’t work for.

  73. Thank you so much! I did not show a padlock. I just deleted and then added my printer.

  74. When I go to System Preferences and click on Printers & Scanners, there is not a padlock in the bottom left corner

  75. Nice easy fix. Thanks.

  76. Thank you! Easy and instant solution

  77. it works, thank you!

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