6 Effective Ways to Solve the Error Code 100006 on Your Mac
-
Written By Ruslana Lishchuk
-
Updated on 29 May, 2024 -
Min Reading 5 Min - Share
Summary: Are you getting error code 100006 popping up on your Mac? Don't know what this error means and how to fix it? This article is just for you.
What Does the Error Code 100006 Mean?
The error code 100006 on a Mac means an issue occurred with some Mac feature, apps, or operations in general. This error will keep appearing on your screen unless you fix it.
What Causes Error Code 100006?
Error code 100006 is usually a result of the following:
- Inappropriate processes on the system, application, or service.
- Damaged system files.
- Malware or spyware attacks, suspicious file download.
- Incompatible or outdated software/hardware installed on your Mac.
- The startup drive is filled with junk files.
How to Solve the Error Code 100006 on your Mac?
1. Run an Antivirus Scan
Apple has built-in protection tools working in the background on Mac: File Quarantine/Gatekeeper and Xprotect. If you have an antivirus on your Mac — run a full scan. If not — you can always download one by choosing a trustworthy antivirus app.
2. Delete Suspicious Apps
Unwanted apps are often bundled with other software that you download and install. This way you may end up having apps you were not intending to use.
To locate the apps on your Mac, use any of these two methods:
A. Go to the Finder → Applications folder > look at the apps you don’t remember installing. These apps can potentially be harmful. Delete the ones you don’t recall downloading.
B. Open Activity Monitor using Spotlight. When in the Activity Monitor app, click the Memory tab. Check which apps use the most significant amount of memory, and make sure these apps are trustworthy. If not, consider deleting them.
3. Free Up Disk Space on Your Mac
Lack of disk space on the Mac can cause Error Code 100006 as well. Here are simple steps on how to optimize storage space:
A. From the Apple menu in the left-up corner of your screen click About This Mac.
B. Click Storage. The storage bar calculates the amount of used and free storage space. After this analysis, it will show several categories of files.
C. Click the Manage button to open the storage control window.
D. To start the optimization process, choose from the listed features (Store in iCloud, Optimize Storage, and Reduce Clutter) and delete the files you don’t need. Learn more about these features.
E. Check the available space shown to see the improvements made. Also, you can check it in the About This Mac window.
4. Run Disk Utility First Aid
The Disk Utility tool checks your Mac’s disk status. It has tools that locate and fix errors for you. After the analysis, the First Aid function will detect and resolve the issue causing error code 100006.
Follow the instructions below to run Disk Utility First Aid:
A. Go to Finder > Applications > Utilities and open Disk Utility.
B. In the left sidebar, select the disk you want to check.
C. Click the First Aid icon at the top > hit Run.
D. After the scan, you’ll see a menu showing the status > click on it to find out the details. The Disk Utility tools will fix the errors and alert you about the issues it can’t repair.
5. Update Your Mac
Checking for and installing software updates on your Mac is essential. Updates to macOS add new features to your Mac, improve the power efficiency, or fix problematic software bugs.
Don’t forget to back up your Mac. After that, follow the instructions below to find and install the software available.
A. Tap on the Apple menu in the upright corner of your screen, and click System Preferences.
B. In System Preferences, choose Software Update.
C. Tap Update Now or Upgrade Now:
- Update now installs the newest updates of the current macOS available, from macOS Big Sur 11.5 to macOS Big Sur 11.6, for example.
- Upgrade Now installs a significant new version with a new name, like a macOS Monterey.
Related: macOS Monterey Update: Recent Problems And Fixes
6. Reinstall macOS
Reinstalling macOS is a practical troubleshooting step applicable when fixing error code 100006 on your Mac. First, find out whether you’re using Mac with Apple silicon or an Intel-based Mac (the instructions will be different for each one). Next, follow the steps suitably to go into the Recovery Mode:
Apple silicon
- Turn on the Mac > press and hold the power button. You should see the startup window.
- Click the Options button (gear icon).
- Tap Continue.
Intel processor
- Turn on your computer and instantly press and hold Command (⌘) + R until you see an Apple emblem or another image.
- Choose a user > click Next and fill in the administrator password if prompted.
- To begin the installation process, you’ll need to choose the Reinstall macOS option. Then, click Continue and follow the instructions you see. After reinstalling macOS, your data will remain on your Mac. It won’t be deleted after this process.
Wrap Up
It’s always confusing and annoying to get errors popping up when you are working, playing, or just browsing social media on your Mac. And it’s always pleasing to know that you fixed the issue on your own like a proper technician! We hope one of these solutions helped you fix error code 100006.
Related reading:
[Explained] macOS Recovery Mode and How to Use it
What is Other Storage on Mac and How to Clean it up
Was this article helpful?
YES0 
NO About The Author
Ruslana is a tech content writer whose true passion is finding out about everything Mac-related. She specializes in creating macOS guides and tips & tricks. In her spare time, you’ll find her doing yoga or discovering local coffee shops in search of the best filter coffee.
4 comments
Leave a comment
I’m having a problem with 2 external hd’s since my change from my old computer (2015 macbook pro) to my new computer (Mac Mini 2018). Everything worked perfectly fine on MBP with El Capitan. The nightmare started since my first day using Mac Mini with Mojave. I’m having that “disk not ejected properly” problem. The first HD is dedicated to Time Machine. The second HD has two partitions and only one of them is set up to be backed up to TM (along with the internal Mac Mini SSD).
The only backup fully completed was the one from the SSD (when only Time Machine HD was connected to the docking station). Everytime I try to backup the partition from the second external HD the “disk not ejected properly” problem happens. Today I try to manually move some folders from one external HD to another, and this other error message appeared “the operation can’t be completed because an unexpected error occurred (error code 100006)”. I’m not sure if this is a Mac Mini or a OS Mojave problem, but It’s been a really frustrating experience since I sold my MBP. Any ideas why this is happening?
It sounds like there may be an issue with the connection between your Mac Mini and the external hard drives. Here are a few things you can try to troubleshoot the problem:
1. Check the connections: Make sure that the external hard drives are properly connected to the Mac Mini. Try unplugging and plugging them back in to see if that helps.
2. Check the cables: The cables connecting the external hard drives to your Mac Mini may be faulty. Try using different cables to see if that resolves the issue.
3. Check the power source: Make sure that the external hard drives are getting enough power. Some external hard drives require a separate power source, so make sure that they are properly plugged in.
4. Check the disk: Your external hard drives may have some disk errors that need to be fixed. Open Disk Utility on your Mac Mini, select the external hard drive and click the “First Aid” button to check for errors and repair any issues.
5. Check for software updates: Make sure that your Mac Mini and external hard drives have the latest software updates installed. Sometimes updates can fix issues like this.
If none of these solutions work, you may want to consider contacting Apple support or the manufacturer of your external hard drives for further assistance.
Hi, Will running a first aid in disk utility on a drive delete all the data on my Mac?
Thanks for your question, Powell. Disk Utility’s First Aid only checks and repairs the errors related to a Mac disk’s file system format and directory structure. It cannot erase data on the drive. However, if you force quit First Aid when it is running, data loss may happen.