failed to open a connection to the scanner (-21345)

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Level 1

2 points

failed to open a connection to the scanner (-21345)

OS 11.6 on MacBook Air 13 inch. HP OfficeJet Pro 8035 (Bonjour Secure Airprint). I was fine on Oct. 1 (Friday), but I noticed a request to make changes to print settings. Today (Oct. 4), I CANNOT open the scanner with Image Capture, PDF Scanner or the new Scan button on Printer (System Preferences, Printers & Scanners, Scan button).

I get the error "failed to open a connection to the scanner (-21345)".

Deleting and reinstalling the Printer driver does not fix the problem. My Mac is up to date. Any recommendations?

Posted on Oct 4, 2021 7:44 AM

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Answer 1

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cbbnyc Author

Level 1

2 points

Oct 7, 2021 3:14 PM in response to jameyfranksf

Very interesting, but 2 days and it all of a sudden works. I uninstalled the printer in Settings. Rebooted. Went to Image capture to confirm it was gone. Reinstalled the printer in Settings. Now it has a Scan option where that wasn’t previously available.

that didn’t work the first day but then I saw some kind of update (I have auto updates on) so restarted. Still nothing. Shut down laptop and somehow on a restart it is working again. Very odd but at least it works again!

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Answer 2

Oct 7, 2021 3:01 PM in response to Barney-15E

According to HP, all my drivers are up to date. But I still can't scan. HP Easy Scan software doesn't work either, nor does Image Capture. I upgraded to Big Sur, but that didn't help.

HP Smart app (available in App Store) seems to work for scanning, but it's unstable and crashes, and very slow to connect to the scanner. HP doesn't support Mac shared folders on the network, and emailing scans is cumbersome.

I'm resorting back to "SneakerNet"..just using my USB thumb drive plugged into the printer, and forget about desktop/network scanning... lame.

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Answer 3

Barney-15E

Level 10

112,686 points

Oct 4, 2021 10:43 AM in response to cbbnyc

AirPrint has nothing to do with Scanning.

Look on the HP website for an "ICA" driver or some generic scanning software.

ICA is to scanning what AirPrint is to printing.

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failed to open a connection to the scanner (-21345)

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