Environment
- Carbon Black Cloud Sensor: 3.7 - 4.0.0.1292
- Microsoft Windows (All supported versions)
Symptoms
After upgrade sensor(s) status is Bypass indicating Bypass (Extension error)
Cause
- DSEN-22274: 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.
- Race condition is due to an interop with the OS. Carbon Black is investigating (DSEN-25236).
Resolution
- Reboot system for sensors 3.9.2.2698 and below
- DSEN-25236 has been determined to be a Microsoft bug. Upcoming sensor release 4.0 MR1 slated for end of April contains a workaround. (See additional notes)
Additional Notes
- (DSEN-16957,DSEN-21771, DSEN-23573) have been resolved in previously released sensor versions.
- DSEN-25236 is still open and determined to be a Microsoft bug. Carbon Black engineers have a case open with Microsoft and are working towards a permanent resolution with no estimated timeline.
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