10.0.3 "Sophos Network Extension" process using 150% CPU

My computer updated to macOS 11.2.1 yesterday and everything seemed fine, then Sophos updated from 10.0.2 to 10.0.3 early this morning. Since the Sophos update, my computer has been experiencing random network data loss. For instance, Microsoft Teams keeps disconnecting, web pages fail to load, etc. These usually only last less than 10 seconds each, but their frequency creates a very high level of frustration.

I noticed that for very long stretches of time (20minutes or more), the Sophos Network Extension is running at 150% CPU usage.

I have all of the components configured to start and I have been running the EAP successfully since the beginning of the program. Today, I had to remove it. The network stability blips and the increased laptop fan usage caused by the high cpu process was too much.

Parents
  • I'm happy to say that we have identified the issue with the high CPU usage for the Sophos Network Extension process and will be included in our GA release.

    Thank you for all the feedback, it really is appreciated, and we apologize for the inconvenience.

  • Will this fix be available in the current EAP before GA?

  • Unfortunately there won't be an update to the EAP before GA which begins rollout next week at which point both EAP and GA lines will update together. If you can provide us with your updating credentials we can move you into the first rollout group, expected to release on Tue 23rd.

    In the meantime, we can offer a workaround to disable the network extension. In Central amend, or create new, policies to disable:

    • Threat Protection
        • Real-time Scanning - Internet

          • Scan downloads in progress
          • Block access to malicious websites
        • Remediation
          • Enable threat case creation
          • Protect network traffic
    • Web Control
      • Disable Web Control 

    Once the features are disabled rebooting the machine will ensure the network extension is not loaded.

    I understand how frustrating this can be and we really do value your feedback and your patience.

Reply
  • Unfortunately there won't be an update to the EAP before GA which begins rollout next week at which point both EAP and GA lines will update together. If you can provide us with your updating credentials we can move you into the first rollout group, expected to release on Tue 23rd.

    In the meantime, we can offer a workaround to disable the network extension. In Central amend, or create new, policies to disable:

    • Threat Protection
        • Real-time Scanning - Internet

          • Scan downloads in progress
          • Block access to malicious websites
        • Remediation
          • Enable threat case creation
          • Protect network traffic
    • Web Control
      • Disable Web Control 

    Once the features are disabled rebooting the machine will ensure the network extension is not loaded.

    I understand how frustrating this can be and we really do value your feedback and your patience.

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