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Carbon Black Cloud: Error: "Bypass (Extension error)" after Windows sensor upgrade

Carbon Black Cloud: Error: "Bypass (Extension error)" after Windows sensor upgrade

Environment

  • Carbon Black Cloud Sensor: 3.7+
  • Microsoft Windows (All versions)

Symptoms

After upgrade the sensor is in bypass and shows Bypass (Extension error)

Cause

  • DSEN-16957: Due to a race condition, sensors upgraded from the CBC console can occasionally result in the sensor being stuck in bypass after upgrade, requiring a reboot to restore.
  • Known issue (EA-20328 / DSEN-16957). This is fixed in 3.8.0.535+

Resolution

  • Reboot the system
  • Upgrade to patched sensor release (3.8.0.535 and above) to prevent this issue from occurring in future upgrades

Additional Notes

Subsequent upgrades will not experience this issue (for example upgrade from 3.8.0.535 (MR1) to 3.8.0.627 (MR2)

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Creation Date:
‎01-14-2022
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