Mac getting 'out of application memory' error after update

A few days ago, my Mac did a download for Tahoe and then an update for Sequoia (or maybe it said Safari). I didn’t know why I got both notifications, so I did both (I’m obviously not tech savvy). Now I keep getting the error message that ‘my system has run out of application memory’. How do I fix this? Thank you.

iMac 24″

Posted on Feb 17, 2026 7:57 AM

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Posted on Feb 18, 2026 9:15 AM

There are 2 reasons for the “Your system has run out of application memory” dialog box.


A. Your boot disk has very low free storage, and macOS cannot create page/swap files to offload virtual memory contents to disk. Depending on how much virtual memory is being called for, anything under 50-100GB of free storage may trigger the message.

Apple menu (upper left corner) -> About This Mac -> More Info... -> Storage (scroll down a bit) -> Storage Settings...


B. A process (or set of processes) has asked macOS for excessive amounts of virtual memory address space. In order to keep track of the virtual memory address space, the kernel creates virtual memory page tables. If there is a memory leak (process asks for a virtual address range, forgets to give it back, asks for another range, forgets again, wash, rinse, repeat), eventually there are so many page tables created there is no memory left for applications, and you get the “Your system has run out of applications memory”.


Look at

Applications -> Utilities -> Activity Monitor -> View (menu) -> All Processes -> Memory (tab)

you can see what processes are using lots of memory. Many of these processes will be background agents and daemons used to provide many of the macOS services, as well as your applications.


Also keep in mind that each web browser tab will be a separate process running its own Javascript. If you have lots of browser tabs open, or if one of the browser tabs running Javascript with a bug in it, it is possible these browser tabs will add up to a lot of virtual memory demands, but no individual tab will look all that big.

9 replies
Question marked as Top-ranking reply

Feb 18, 2026 9:15 AM in response to jingle_jangle

There are 2 reasons for the “Your system has run out of application memory” dialog box.


A. Your boot disk has very low free storage, and macOS cannot create page/swap files to offload virtual memory contents to disk. Depending on how much virtual memory is being called for, anything under 50-100GB of free storage may trigger the message.

Apple menu (upper left corner) -> About This Mac -> More Info... -> Storage (scroll down a bit) -> Storage Settings...


B. A process (or set of processes) has asked macOS for excessive amounts of virtual memory address space. In order to keep track of the virtual memory address space, the kernel creates virtual memory page tables. If there is a memory leak (process asks for a virtual address range, forgets to give it back, asks for another range, forgets again, wash, rinse, repeat), eventually there are so many page tables created there is no memory left for applications, and you get the “Your system has run out of applications memory”.


Look at

Applications -> Utilities -> Activity Monitor -> View (menu) -> All Processes -> Memory (tab)

you can see what processes are using lots of memory. Many of these processes will be background agents and daemons used to provide many of the macOS services, as well as your applications.


Also keep in mind that each web browser tab will be a separate process running its own Javascript. If you have lots of browser tabs open, or if one of the browser tabs running Javascript with a bug in it, it is possible these browser tabs will add up to a lot of virtual memory demands, but no individual tab will look all that big.

Feb 21, 2026 11:20 AM in response to jingle_jangle

jingle_jangle wrote:

Got it. It says Physical Memory is 16.00 GB. Memory Used is 14.23 GB. Cached Files is 1.74 GB. Swap Used is 32.55 GB. User Bluetooth driver is 864 KB. Apple driver kit is 800 KB. Window Server is 300 MB. I’m in Activity Monitor right now and I just got another message that I’m out of Application Memory.

And the amount of free storage? If there is no storage to create page/swap files, then the operating system cannot give out any new virtual memory.


The fact that you have 32.55GB Swap Used, means you have apps that are consuming virtual memory that exceeds physical memory. THIS IS OK. This is normal, but it does mean you have to have physical storage available to grow the swap file(s).


So how much free storage does your system have.


Applications -> Utilities -> Disk Utility -> "Data" in left column, can tell you how much free space your system has.

Feb 21, 2026 2:48 PM in response to jingle_jangle

Please download and run Etrecheck.  The free version is sufficient.


Copy and paste the results into your reply. Etrecheck is a diagnostic tool that was developed by one of the most respected users here in the ASC to provide a snapshot of the system and help identify the more obvious culprits that can adversely affect a Mac's performance.


Copy the report



and after clicking on the Reply button use the Additional Text button to paste the report in your reply.



Then we can examine the report and see if we can determine the cause of the problem.


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Mac getting 'out of application memory' error after update

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