Support Code:300 The printer does not respond

Okay, I just downloaded & installed the driver and was able to print more than one document at a time. Thank you TBannor!!!!!! You are my hero.

Just had same problem with Error Code 300 and checked ink cartridge and black was close to empy. Replaced and printed just fine. Thanks to all

This has driven me nearly insane! I tried all of the above suggestions, with similar temporary success. Then, it hit me that, since the last time I printed, we had a brief power outage. I unplugged & restarted the router, and it was like God shined down on me. Suddenly everything prints fine. May not next time, but this may have been the magic key.

I've been having the same problem with a Canon MP495. It just started happening recently. If I turn the printer off and back on, it works. But I have to do that every time I print.

Of the suggestions made, this one worked for me but others did not. Thanks for sharing.

How did you add your printer manually? I deleted it and now I can't find it. Please help

To ellis28 - have you tried unplugging the printer (for at least 10 seconds) and plugging it back in? That cleared Support Code 300 for me -- however, this just happened and I haven't tested it over a period of days. Turning the printer (Canon MX870) on and off did not re-set it, but unplugging it did so I'll see how it goes from here.

I, too, did an update and got this same Support Code 300 error and tried what Tbannor suggested, but could not manually add printer and my computer did not search for it. I had to insert the original disc and add the computer back into the system and now it works..hopefully, forever....hope this helps dhunter910 bc it's very frustrating..had to print homework out for my daughter and took me about 6 hours to get this done!

same thing happened to me..could not add manually, I posted below that I had to insert disc and re install the printer and now it works..so frustrating! hope this helps you!

I spent most of Sunday trying to get rid of the Support Code 300 on my MX870. When I deleted the printer and went to reinstall it, there was no recognition that I owned such a machine. I had to go through the Wireless Lan Setup again. What finally got rid of my code was changing out a cartridge that was empty, I had also not recieved any indication that I needed to do that; thanks to a previous reply I knew that was one solution.

Hello! I am dealing with the same issue. Cutting things off and back on, jiggling the cartridges, etc... had been working until today. I deleted the printer from my Mac, but it won't "find" it now. I don't have a clue what to type in to help it add it now, and I'm rather panicked. Can someone please help me? 😟 I'm not very good at this type of thing.

jijibar,

Don't panic...lol. It is easy to correct. First, click on system preferences, then printer and scanners. When the printer boxes opens, check to see if your printer is listed. If not, then turn off your printer, wait a couple minutes and then turn it back on. Now click the + button on the bottom left of the box. This will add the printer to your computer. Give the printer a couple minutes to connect to your mac. My printer will generally show 2 type of drivers - one will say bonjour after the printer name and then second just the name. Choose the non-bonjour printer and then hit the add button. Re-send what you are trying to print and this should correct it...until it happens again. Mine does this occasionally - not sure why.

Hope this works for you!!

I've been having this issue on several Macs lately, then I realized that I recently updated the printer drivers from the update tab on the App store and that is when I started receiving the error 300. Reinstalling the drivers fron Canon's site will do the trick (at least it did for me). Give it a try.

I also was having this error message every time I tried to print. I reverted back to the drivers from the Canon website and my MP620 started printing again. Thanks for the great tip. Others should try this first.

I had the same problem with my Canon Pixma MG7150. I deleted it on the system preferences and added it again ... And it workks again!! Thanks for the tip!!