Failed to Open a Connection to the Device (-21345) – Solution To Fix

A scanner is a device that can be used to digitize documents and images. It can be a great way to save space and make your documents more portable. However, sometimes scanners can experience problems, such as the “Failed to Open a Connection to the Device (-21345)” error. This error occurs when the scanner is unable to connect to your Mac.

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In this article, we will show you how to fix the “Failed to Open a Connection to the Device (-21345)” scanner error on Mac. We will also provide some tips on how to prevent this error from happening in the future.

How to Fix the “Failed to Open a Connection to the Device (-21345)” Scanner/Printer Error on Mac

1. Restart your Mac and scanner/Printer.

This is a simple but often effective way to fix many problems. Restart your Mac and scanner, then try to connect them again.

2. Check the cables.

Make sure that the cables connecting your scanner to your Mac are properly connected. If the cables are loose or damaged, they could be causing the error.

3. Update your scanner/Printer drivers.

Scanner drivers are software that allows your Mac to communicate with your scanner. If your drivers are outdated, they could be causing the error. To update your drivers, go to the website of your scanner manufacturer and download the latest drivers for your model.

4. Reset your scanner/Printer.

If you have tried all of the above steps and the error is still occurring, you can try resetting your scanner. To do this, follow the instructions in your scanner’s manual.

5. A Tricky Workaound.

Here is a method to totally fix the scanner/Printer problem on your macOS if some individuals do not want to update to this version of the Mac operating system.

Note the name of the unavailable programme (the scanner driver is it).

Close all active programmes.

Go > Go to Folder can be found in the Finder Menu Bar.

Enter /Library/Image Capture/Devices into the pop-up field that appears.

Click twice on the application that appeared in the error. Nothing will occur, and that is expected.

Shut the window and run another scan. Now everything will function properly, if only briefly.
If the issue arises with a different scanner, just repeat the process by double-clicking the appropriate driver name, and you should be good to go.

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Tips to Prevent the “Failed to Open a Connection to the Device (-21345)” Scanner Error

1. Keep your scanner/Printer drivers up to date.

As mentioned above, outdated scanner drivers can cause problems. To prevent this, make sure to update your drivers regularly.

2. Avoid using third-party software to scan documents.

Third-party software can sometimes interfere with the scanner’s functionality. If you are experiencing problems, try using the scanner’s built-in software instead.

3. Take care of your Printer/scanner.

Make sure to properly care for your scanner by following the instructions in the manual. This will help to prevent problems and extend the life of your scanner.

Conclusion

We hope this article has helped you to fix the “Failed to Open a Connection to the Device (-21345)” scanner error on Mac. If you have any further questions, please feel free to leave a comment below.

FAQs

Q: What does the error message “Failed to Open a Connection to the Device (-21345)” mean?

A: This error message means that the scanner is unable to connect to your Mac. This can be caused by a variety of factors, such as outdated drivers, loose cables, or a problem with the scanner itself.

Q: How can I prevent the “Failed to Open a Connection to the Device (-21345)” error from happening again?

A: You can prevent this error by following the tips in the article, such as keeping your drivers up to date and avoiding using third-party software to scan documents.

Additional Information

• The error message “Failed to Open a Connection to the Device (-21345)” can also occur if your Mac is not properly connected to the internet. Make sure that your Mac is connected to the internet and that you have a strong signal.
• If you are using a wireless scanner, make sure that your Mac and scanner are both connected to the same Wi-Fi network.
• If you are still having trouble fixing the error, you can try reinstalling your scanner software. To do this, uninstall the software from your Mac and then download and reinstall the latest version from the website of your scanner manufacturer.

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Final Thought

We hope this article has been helpful. If you have any further questions, please feel free to leave a comment below.