MRT

Activity Monitor shows that MRT is taking over 200% CPU on my 27" 2010 iMac. I am unable to force quit the MRT process in Activity Monitor. The fans are running loudly and rebooting in SAFE MODE and cleaning caches, and running an AV scan, running Cleaner and MalwareBytes also did not help. I uninstalled MalwareBytes, but that also has not helped. This has been going on for days. The Console app shows that MRT is crashing and reloading about every 10 secs. Any ideas on how to get my computer under control?

Thanks,

Dan

iMac, OS X 10.11

Posted on Oct 21, 2020 6:38 PM

Top-ranking reply

laserski Author

Level 1

12 points

Posted on Oct 22, 2020 8:17 PM

I was able to fix the issue by using Time Machine to extract an older copy of MRT.app and then I booted into another drive and copied the MRT.app file over the bad one. Then I rebooted and all seems to be well. I turned off the updates in the App Store Pref Pane to keep it from being updated again. I'll have to remember to turn that back on once Apple fixes the issue. Thanks everyone for your help and suggestions.

Dan

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MRT

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