My iMac cannot see my printer at all

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Level 1

4 points

My iMac cannot see my printer at all

My iMac cannot see Canon-printer since one week ago. It has always been working well until one week ago. Even with a USB-cable he didn't see that printer.

Our iPhone/iPad/MacBook can see the printer well, only iMac cannot!

The printer is connected at the same network/wifi as iMac/iPhone/iPad/MacBook.

The firmware of the printer is the latest, so is the version of my iMac (macOS 10.15.4).

I already removed all the files on /bibliotheek/printer/ and wanted to add a new printer. He didn't see any printer.

I downloaded the printer driver from Canon-website and tried to add a new printer, but iMac still doesn't see any printer.

I contacted Canon but because iPhone/iPad/MacBook see printer well, they cannot help me. They said I must contact Apple so I try by this way.

I hope you can help me to solve this issue!

Posted on May 26, 2020 1:43 AM

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Answer 1

Top-ranking reply

Old Toad

Level 10

210,901 points

May 27, 2020 2:39 PM in response to kuifje_007

Hold down the Option key and in the  menu select System Information. In the SI window select Installations in the sidebar. You can sort the installations by Install Date to find those around the date you're looking for.

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Answer 2

SeaPapp

Level 7

26,492 points

May 26, 2020 2:51 AM in response to kuifje_007

Try resetting the printing system and adding the printer again If you can't print from your Mac or iOS device - Apple Support

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Answer 3

kuifje_007 Author

Level 1

4 points

May 26, 2020 11:33 PM in response to Old Toad

I just installed the new version of MacOS: 10.15.5. I was hoping this would fix this bug but appearently not.

What do you mean with the same system? MacBook runs 10.15.4 now but I will update it soon.

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Answer 4

Old Toad

Level 10

210,901 points

May 27, 2020 10:41 AM in response to kuifje_007

If both devices were running 10.15.4 and the MacBook was able to see and use the printer then that rules out the system as the blockage.

Did you run any installers/updaters, cleaning or optimizing apps between the time you could use the printer and when you couldn't?

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Answer 5

kuifje_007 Author

Level 1

4 points

May 30, 2020 6:08 AM in response to Old Toad

That was the solution. I found what and when was installed. I see I installed McAfee Antivirus some weeks ago and since then iMac cannot see the printer.

When I switched off the firewall, iMac is able to see the printer!

I will contact McAfee!

Thanks to all again for your help!

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Answer 6

SeaPapp

Level 7

26,492 points

May 30, 2020 1:45 PM in response to kuifje_007

Ask yourself if there are no mac viruses why am I installing AV software? As you've discovered AV software on a Mac is less than useless and only serves to cause problems. Uninstall Macafee per the developers instructions.

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Answer 7

Old Toad

Level 10

210,901 points

May 30, 2020 2:03 PM in response to kuifje_007

Don't contact MacAfee except to get a refund. It's a total worthless app for Macs. There are no known viruses for Macs and MacAfee is not designed to effectively search for adware or malware. It just sits there and uses up system resources. Go a Google search for how to uninstall the MacAfee software.

Also If you're behind a router you don't need to activate the Firewall. The router does an excellent job of preventing access to your Mac.

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