I just realized that the job com.apple.mrt crashes every 10 seconds on my Mac.

  • What exactly is the aim of com.apple.mrt? Apparently it should be a "Malware Removal Tool".
  • Can I remove it from launchd (overrides.plist) ?

Here is my Console system.log :

31/07/2015 16:22:11,756 smd[180]: Could not remove job "com.apple.mrt": 150: Operation not permitted while kernel is in rootless mode
31/07/2015 16:22:11,769 com.apple.xpc.launchd[1]: (com.apple.mrt[590]) Service exited with abnormal code: 2
31/07/2015 16:22:11,769 com.apple.xpc.launchd[1]: (com.apple.mrt) Service only ran for 0 seconds. Pushing respawn out by 10 seconds.

Config :

  • MacBook Pro (13" - mi-2012)
  • 2.5 GHz Intel Core i5
  • OS X Le Capitan 10.11 (Beta 4 - build: 15A244d)

If you want to rid yourself of com.apple.mrt, you can run a few Terminal commands to get it out of your hair.

First, open the Terminal app. You can find it in Launchpad or by using Spotlight. Next, stop the process using sudo launchctl stop com.apple.mrt.

Then, remove the components, using the following (or manually remove them in Finder):

sudo rm /System/Library/LaunchDaemons/com.apple.mrt.plist
sudo rm /System/Library/LaunchAgents/com.apple.mrt.uiagent.plist
sudo rm /System/Library/CoreServices/MRTAgent.app
sudo rm /usr/libexec/MRT

Finally, reboot your machine. com.apple.mrt should no longer launch on startup (or at all).


  • You may need to enter an administrator's user and password.
  • Apple may release updates which re-add com.apple.mrt to your machine.

I have MacOS Sierra 10.12.6

MRT runtime files are not easy deleted.

  1. step (Run recovery mode):
    1.1 restart your mac
    1.2 press cmd+r on load
    1.3 recovery mode opened

  2. Use Terminal un utilites menu
    2.1. try command csrutil disabled (google about csrutil)
    2.2. if you see message "command not found" go to nex step
    2.3. using filesystem delete these files /System/Library/LaunchDaemons/com.apple.mrt.plist /System/Library/LaunchAgents/com.apple.mrt.uiagent.plist /System/Library/CoreServices/MRTAgent.app /System/Library/CoreServices/MRT.app /usr/libexec/MRT

I input such commands:
cd "/Volumes/Macintosh HD/System/Library/LaunchDaemons"
rm ./com.apple.mrt.plist

Important: Macintosh HD - your general bootable disk.

2.4. Restart your Mac
2.5. Enjoy

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