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Sophos Endpoint Intercept X (Malicious Traffic Detection) slows down MacOS Monterey extremely

Hi all,

following issue: I upgraded different machines (4 for testing) to MacOS Monterey 12.0.1.

They got all the same issue: After upgrading and rebooting, the machines slowing down extremly.

The OS would hang with beach ball and take forever to do even one click. They got useless!

After some testing i found out, if i turned off "Malicious Traffic Detection" in the Runtime Protection Settings of the Endpoint software (10.2.2), the machine starts to work normal, the system brakes and beachballs are gone.

But after i turned "Malicious Traffic Detection" on again and restarted the machine, it slows down again the machines extremely direct after booting.

I can reproduce this setting on all machines with Monterey 12.0.1

Even the latest EAP version of Sophos Endpoint (10.3.0) didn’t fixed this issue.

Any recommendations for this?

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0 Qoosh over 1 year ago

Hello,

Thank you for reaching out to the Sophos Community Forum.

Do you know if multiple network extensions are installed on the macOS devices in question? In some cases, having other network extensions installed prior to that of Sophos' can cause issues.

I have reached out to you via PM to request logging information from one of the affected devices to look into the issue further.

Kushal Lakhan

Team Lead, Global Community Support
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0 Afonso Soromenho over 1 year ago in reply to Qoosh

Hi Kushal,

I have the exact same problem running version 10.3.1 and Mac OS 12.1 on both my MacBooks, it’s impossible to use the computers with the “malicious traffic detection” setting on, when you turn it off the computer works fine
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0 Qoosh over 1 year ago in reply to Afonso Soromenho

Thanks for reaching out.

I have PM'd you to gather further details on this issue.

Kushal Lakhan

Team Lead, Global Community Support
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0 Craig Carrigan over 1 year ago in reply to Qoosh

I'm having this same issue as well if you can help.
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0 Qoosh over 1 year ago in reply to Craig Carrigan

Hello Craig,

As an initial step, I'd recommend running the following command.
# systemextensionsctl list

The "network_extension" should report back with Version 10.3.0, "scanextension" should report back with 10.3.1.

Let me know if you see additional system extensions present when running the command.

Kushal Lakhan

Team Lead, Global Community Support
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0 Craig Carrigan over 1 year ago in reply to Qoosh

Thanks! Yes, that what it shows (just the 2 with those versions). When I install Sophos, things run fine until I reboot. I'm not sure if that helps in any way.
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0 Craig Carrigan over 1 year ago in reply to Qoosh

Thanks! Yes, that what it shows (just the 2 with those versions). When I install Sophos, things run fine until I reboot. I'm not sure if that helps in any way.
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