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MacOS: Threat Prevention locking up with Disk Encryption

After a MacBook Pro with Disk Encryption via FileVault wakes up from an extended sleep state, the Threat Prevention service is locking up/crashing. This is causing a very noticeable drop in performance with a number of applications that access the disk for tasks, even Terminal is affected by this. Note: Web Control and Adaptive Threat Prevention come back online without issue.

Our only work around so far is to either reboot the system, or if they have admin access, so restart the services. I've removed disk encryption from my system and after an extended time in sleep mode, Threat Prevention came back online without issue. Unfortunately, due to sensitive customer information, we do require disk encryption.

Can this be caused by TP attempting to read files that are being encrypted post wake up & going back to plugged in power? If so, is there is a setting to tell TP to hold off on reading files being encrypted?

I'm testing on my own MBP right now and Encryption is off, I do plan on turning encryption back on and testing by downloading a large ISO file while the system is on battery (FileVault wont' encrypt until the system is awake and plugged in), close the lid, wait a while, plug in power, and open the lid back up to see if I can trigger a Threat Prevention crash that way.



  • 2016 MBP i5
  • macOS Catalina: 10.15.6
  • McAfee Endpoint Security for Mac: 10.7.0 (142)
    • Threat Prevention
      • Version: 10.7.0 (182)
      • Engine Version: 61009.8979
      • DAT versions are most recent, no issue updating when Threat Prevention is working


2 Replies

Re: MacOS: Threat Prevention locking up with Disk Encryption

Well, it's not FileVault's disk encryption causing the issue. That's off and I still experience Threat Prevention crashing and killing disk performance.

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Re: MacOS: Threat Prevention locking up with Disk Encryption

Hi @Michael89012,

Thank you for your post and apologies for I see that this is still not responded from our end.

May I please request you to move this to the below forum to gain attention from MAC and Linux experts from the forum and Support?



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