5 Easy Ways to Fix Error Code 43 on Mac [2024]

Clare Weaver
Last updated: Jan 26, 2024

This post is about error code 43 on Mac. Learn what it is, why it appears, and how to fix it below!

Receiving the popup message "The operation can't be completed because one or more required items can't be found. (Error code -43) while copying, moving, or deleting files on your Mac?

Don't worry! Follow this guide to fix the Mac error code 43.

Error Code 43 on Mac

What Is Error Code 43 on Mac?

Error code 43 on Mac means the files or downloads you are processing can not be found on Mac as the pop-up message reminds "The operation can't be completed because one or more required items can't be found. (Error code -43)".

Error Code 43 on Mac

Possible Causes for Error Code 43 on Mac

The causes behind Mac error code 43 are mainly:

  • File name (too long/with special character).
  • Files were moved or deleted.
  • External hard drive/USB flash drive unmounted/error.
  • Corrupted software/file.
  • The software/file was not downloaded completely.
  • File locked/in use.
  • No share point or share point missing.

How to Fix Error Code 43 on Mac

After having a general understanding of the possible causes of Mac error code 43, let's go directly to the fixes.

1. Force Quit Finder

If the popup window appears with a Finder icon, the first yet simplest solution to this error is to force quit Finder and relaunch it.

Finder error code 43

Here is how:

On your Mac, choose Apple menu>Force Quit>Select Finder>Relaunch.

Force quit Finder Mac
Or you can use the shortcut: Command + Option + Esc to bring up the force quit window.

2. Restart Your Mac

Some occasional system conflicts could be fixed with a simple restart. Give your Mac a restart and see if the error remains. If yes, skip to other methods.

3. Check the File Status

As we mentioned before, incomplete or corrupted files may lead to Mac error code 43. Check the file status and remove the file lock:

Right-click the file>Get Info>Check the file size (make sure it was not shown as 0) and uncheck the Locked box.

Check file status

4. Check the Status of the External Hard Drive

If you are copying/moving files in the external hard drive/USB flash drive to your Mac, you'd better check the status of your external hard drive.

In the case that the external hard drive is unmounted while you are transferring files between the external hard drive and your Mac, the error code 43 may appear.

Open Disk Utility>Find and click your external hard drive>Check whether it is mounted or not.

If there is any error with your external hard drive, try running first aid in Disk Utility.

5. Boot Mac into Safe Mode

Running your Mac under Safe Mode allows you to rule out whether the error code 43 is caused by software that loads as your Mac starts up.

Before booting your Mac into Safe Mode, check what type of your Mac is first: Go to the Apple menu>About This Mac.

About this Mac
  • For a Mac with Apple Silicon:
  1. Go to Apple menu>Shut Down.
  2. Press and hold the power button until "Loading startup options" appears.
  3. Select a volume.
  4. Press and hold the Shift key>Click Continue in Safe Mode.
  • For an Intel-based Mac:
  1. Turn on or restart your Mac, then immediately press and hold the Shift key until you see the login window.
  2. Log in to your Mac.
  3. You might be asked to log in again.

Besides the above 5 methods, resetting NVRAM, forcing empty trash via Terminal, etc. are also worth a try.

Bonus: How to Optimize Your Mac Performance

To optimize your Mac performance, have a Mac performance monitor as your reminder and assistant.

BuhoCleaner is a user-friendly and powerful Mac cleaner and performance monitor. The BuhoCleaner menu offers you quick access to monitor your Mac's CPU load, temperature, fan speed, and network speed.

The main features of BuhoCleaner:

DownloadFor macOS 10.10 and above
100,000+ Satisfied Users Worldwide
  • Clean junk files, large files, and duplicate files in minutes.
  • Monitor Mac performance in real time.
  • Uninstall apps together with their leftovers completely.
  • Manage start-up items with ease.
Quickly Free Up Disk Space on Mac with BuhoCleaner


Congratulations! You have equipped yourself with skills to fix the error code 43 on Mac. Go and practice them out now!

Clare Weaver

Clare Weaver has been captivated by the world of Apple products since the launch of iconic iPhone in 2007. With a wealth of experience, Clare is your go-to source for iPhone, iPad, Mac, and all things Apple.