If ManifestDownloadFailure alarms continue in SensorAlarms.log, please open a case with Carbon Black Technical Support and provide
Verification of access from step 1
Configuration information of firewall/proxy exclusion from step 2 (along with date/time implemented)
Firewall/proxy logs with any errors in communicating with content.carbonblack.io
Output of step 3 above
There is no need to perform these steps unless directed to do so by an In-Product Notification in the Carbon Black Cloud Console or by a member of VMware Carbon Black Technical Support.