Your System Has Run Out Of Application Memory? Here’s A Fix

Encountering the “Your system has run out of application memory” error on a Mac can disrupt workflow and cause frustration. Understanding the root causes and implementing solutions to resolve this issue is crucial for restoring system stability and ensuring uninterrupted productivity within the macOS environment.

Exploring effective troubleshooting steps allows users to address memory allocation issues and regain seamless functionality on their Mac devices.

What does “Your system has run out of application memory” mean –

If you encounter – Your system has run out of application memory error on your Mac, there are a few possible causes. 

Your system has run out of application memory

As with most devices, Macs also need to rely on the memory to perform various functions. If there is no free space left on your disk or the RAM you will most likely receive this message. Although other reasons also include multiple tasks running at the same time,  the web browser has several tabs open, incompatible or hanging applications.

How To Fix “Your System Has Run Out Of Application Memory” Issue

Method 1: Restart Mac 

The easiest solution to fix ‘Your System has run out of application memory’ is to simply restart your Mac. It basically clears all the acquired cache memory along with temporary files, so you regain a considerable amount of storage back.

Method 2: Update latest macOS 

As simple it might seem, the lack of it might be behind multiple errors on your Mac. Yes, it is important to keep your mac up to date. Therefore, if you are getting this error message – Your system has run out of application memory despite a clean and clutter-free disk storage. Check if any update is available, to do so, follow the steps below – 

Note- Make sure to take a backup before updating.

Step 1: Go to the Apple menu and select the System Preferences.

Step 2: Here go to the Software Update.

Software Update

Step 3: If you see an update or upgrade available click on the button. For better, click on the Automatically keep my Mac up to date to receive the updates automatically. 

Method 3: Storage Management from Apple 

To deal with Mac internal issues Apple provides very useful utilities to manage space on Drives.

Follow the below steps to utilise these inbuilt tools on your Mac : 

  • Select Apple menu on the top menu bar and Select About this Mac
  • Choose the Storage tab on the top and Click on Manage button. 

Storage tab

  • You will be presented with various Recommendations to improve Mac’s performance, consider following all the options to keep your Mac optimised. 

Optimize Storage
Method 4: Update Apps

Sometimes it so happens that apps need updates due to bugs which are causing your Mac to run slow. So check if any updates are available for apps and try to update them diligently. For the apps from the App Store look for updates there and for other apps check in their app updates section. 

Your System Has Run Out Of Application Memory
Method 5: Stop apps not in use 

Some applications even when not in use take up system resources in the background thus make your Mac run slow evidently. It’s better you quit all the applications when you are done using rather than keeping them running in the background so they take valuable system resources. 

To close the apps that you are currently not using Press Option + Command + Esc to open the Force Quit menu window. 

Force Quit application

Now, select the application one by one and click on the Force Quit button. This helps you in clearing the unwanted or troubling applications on your Mac.

Method 6: Clear unwanted browser tabs

Quite often we leave browser tabs open even after using them and these tabs also take up large system resources. So consider closing all the tabs when done using them and it’s always better to bookmark the regular website that you often visit rather than keeping them open in the background. 

Method 7: Uninstall unwanted applications

As a final resolution, consider uninstalling all the applications that you are currently not using and other useless apps. Some apps take up quite a considerable amount of space and it is better to uninstall them when you don’t need them, but of course you can always re-install them back. 

Uninstall unwanted applications

To uninstall manually, go to the Finder and search for the app. You can find most of your applications listed under the Applications folder. Select and drag the application to Trash or click on it and select the option – Move to Trash. Later empty the Trash to get rid of it permanently.

Frequently asked questions

Q1. What do I do when my Mac says system has run out of application memory?

If your Mac shows you this error message, you need to immediately follow the steps mentioned in this blog. Starting from checking your Activity Monitor to remove close unwanted tasks, freeing up disk space.

Q2. How do I increase application memory on a Mac?

Close other running applications, check from Activity Monitor that which software processes are hogging and close them as well. This will give your application the space required to perform properly.

Q3. How do I free up app memory?

There is no format to free up app memory, other than clearing up unwanted junk and cache files. Rebooting your Mac can also free up the system from unnecessary tasks and processes running in background to give more memory to run an application.

Q4. How much application memory does my Mac have?

To check how much application memory is used on your Mac, open Activity Monitor and go to the Memory tab.


In conclusion, tackling the “Your system has run out of application memory” issue on a Mac demands prompt and targeted action.

By exploring troubleshooting methods and optimizing memory usage, users can restore system stability and resume uninterrupted workflow within the macOS environment. Implementing these solutions helps prevent memory allocation issues, ensuring a smoother and more efficient computing experience on Mac devices.

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