Support Code:300 The printer does not respond

I would get a 300 error when I tried to print a pdf using Adobe Reader on a Mac over my wifi network to a Canon MX860. From then on I would get the same error message and would be unable to print any type of document from any other device (pc, iPad, iPhone, Nexus, etc) until I cleared the print queue and then power cycled both the printer and my wifi router. Through a process of elimination I have discovered that the error only occurs when I try to print from Adobe Reader and, surprisingly, from either my pc or my Mac. I found that if I use any other program to print a pdf I never have a problem.

This solution has worked for me for about 3 months now. It would be nice to know whether the issue lies with Adobe or Canon and whether anyone has gotten either of them to stop fingerpointing and actually work together to solve this.

TBannorSep 8, 2013 3:30 PM Re: Support Code:300 The printer does not respond
Re: Support Code:300 The printer does not respondin response to Bartlett3000

The Support Code 300 error just appeared with my Canon MX870. Here's how I fixed it. Go to Print and Scan in System Preferences. The printer should appear in the list at top left. Highlight it and delete it by hitting the "-" button at bottom left. After confirming the delete, hit the "+" button. When the Mac finds the printer, add it. Try printing, it should work now. I had to do this a year or so ago too for a similiar communication problem. It's worked both times.

This worked for me. Deleted the current MX350 and reinstalled it.

This just worked for me and I also restarted my modem! Thanks for the help!

Thanks! This worked for me… was going nuts.

Removing and adding back the printer worked for me also. The issue started after installing the update via App Store.

I have been having this problem on my Mac for a year now (ever since upgrading to 10.8). I thought that OS 10.9 would be better but the problem just got worse. We have six printers in the office and everyone is connected (wired) to all of the printers except for the two Canons that my salesperson (using a Dell notebook running Windows 7) and I use on our desks. We can print wirelessly without any problems to any of the other printers in the office (all HPs), but have all of the same problems defined by all of the posts above with our two Canon printers. For the last year or so, I (who has been a PC and Mac user since day one and consider myself computer literate) and my network company have tried everything discussed above and more. The printers will work for a document or two or even longer, but then the same error 300 again. I won't get into everything tried except to say that we have done it all and more than anyone above has described. I am now convinced that it is a Mac/Canon wireless only problem about which neither company is really concerned. The Windows issue is not nearly as bad, but it is still an issue. Although I used to love the Canon printer and Multifunction line of products, we just cannot function any longer with this problem. In the past year, I have changed everything except for the printers and, like I said, we have had no problems printing wirelessly to three HP printers (HP 4300, HP 4600 and HP 5200). I have now decided to find the nearest comparable HP printer to change out the Canon in my office (MG 8220), and if that solves the problem, I will also replace the other on the Windows 7 PC.

This was the only suggestion that worked for me on a 10.6.8 OSX with a Canon PIXMA MX922. On my router, the DHCM (Dynamic Host Configuration Protocol) was set to automatically reassign a new IP address every 24 hours. Via my router's local network settings page I created a DHCP "reservation" for the printer so that the printer IP address would remain static and not be reassigned every 24 hours. I have been able to access the printer with no issues for over a week now.

I too have a Canon PIXMA MX922. My problem started when I upgraded to Yosemite. Before that I was on Mavericks and everything was fine. As soon as I upgraded I started getting error 300. I'd have to unplug the printer to get it to go again.

I've just set a static IP so I'll see whether this works. Thanks for the idea.

I have a Canon Pixma MX350 that would get the 300 error code all the way back to using Snow leopard. Then with Lion and Mountain Lion. No different with Yosemite. It works fine for a while, then loses connection, having to turn it off and on again.

It's been a week since I set a static IP and I've had no trouble at all. Before I would have to restart the printer every day or two.

Just had my first disconnect in two weeks. Don't know if that means the static IP really didn't help or whether something else happened.

Had the same issue with a Canon MG5200 series printer.

Suddenly could not print anymore through WiFi, other printers in network (both Mac and PC) had no printing problems.

Solution that works:

1. Go to Printers and Scanners in your System Preferences.

2. The printer should already show in the list at the left.

4. Select it and delete it by clicking on the - sign.

5. Then add a new printer by clicking the + sign/

6. After a short while, the printer should show.

7. Just add it then.

Strangely enough I had to do this multiple times the last weeks but everytime it does work.

Maybe it is a corrupt preference file causing this.

You say that you had to do this a number of times. Does the problem recur after a while? Because that's what happened to me.

I gave up and plugged in a USB cable.

Yes, after some while it repeated itself, so I have added the printer at least 3 times the last weeks.

Thank you! This worked wonderfully, and it is almost too simple of a solution. How annoying and stupid this problem is with this printer to not stay connected.