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How to fix Macintosh error code 43?

Published on April 10th, 2022

Macintosh error code 43 is an error that occurs when you try to delete a file that is in use by another program. This can happen if you try to delete a file that is open in another program, or if you try to delete a file that is being used by the operating system.

1. Run Disk Utility to repair any disk errors

Open the Disk Utility application on your Mac. Select the disk that is having problems. Select the “Repair” tab. Select the “Errors” button. Select the “Repair Disk” button. Select the “Options” button. Select the “Repair Disk” button. Select the “OK” button.

2. If you're using an external drive, make sure it's properly connected to your Mac

  1. Verify that the drive is properly connected to your Mac.
  2. If the drive is not properly connected, connect it to your Mac and try to fix the macintosh error code 43.
  3. If the drive is properly connected and the macintosh error code 43 still persists, try to fix the issue by using a disk utility.

3. Check for software updates and install any that are available

  1. Open the Mac App Store on your computer.
  2. In the Mac App Store, search for "Software Update."
  3. If there are any available updates, click Update and then Install.
  4. If there are no available updates, click OK.
  5. Close the Mac App Store.
  6. Restart your computer.
  7. If the update installed correctly, your computer will restart and you will see a message indicating that there are updates available. Click Update and then Install.
  8. If the update did not install correctly, follow the instructions provided to fix the problem.

4. Restart your Mac

  1. Open the "Apple Menu" at the top left of the screen and select "System Preferences."
  2. Click on the "Restart" button in the "System Preferences" window.
  3. Your Mac will restart and will display a message informing you that it has restarted.
  4. After your Mac has restarted, select "Yes" to continue with the restart process.
  5. Your Mac will now restart again and this time, it will enter the "System Recovery" process.
  6. During the "System Recovery" process, your Mac will attempt to restore your operating system.
  7. If the "System Recovery" process is unsuccessful, your Mac will display a message stating that it has failed to restart.
  8. If the "System Recovery" process is successful, your Mac will restart and enter the "System Preference" window.
  9. In the "System Preference" window, select "Restart" and then click on "OK."
  10. Your Mac will restart and will display a message informing you that it has restarted.

Still not working? maybe try one of these options:

  1. Try connecting your drive to a different USB port.
  2. If you're using a USB hub, try connecting your drive directly to your Mac.
  3. If you still see the error, contact Apple Support.