Update for RMM Managed Antivirus Bitdefender (MAV-BD) scheduled for week of December 2nd

Please be advised we will be pushing an update for Managed Antivirus MAV-BD v6.6.21.304 available for all Modern Windows Operating Systems (Windows 7+ Windows Server 2008 R2+) starting Wednesday December 2nd, available in all territories by the end of the week.


  • Enhanced visibility for Advanced Threat Control events by providing the threat name locally in the Event log

The following issues were fixed in this build:

  • A deadlock in the product caused the Antimalware module to appear as disabled on Windows 10 systems, even though it was running
  • In some situations, the Advanced Threat Control module caused critical errors (BSOD) when the Security level was set to Aggressive
  • The Antimalware custom exclusions failed to work properly when using an extended – length path prefix.
  • The security agent caused a server to become unresponsive when Vmware Serial Port Redirection was enabled along with the On-Access Boot Sectors scan option
  • In some situations, opening the Full scan log resulted in a display error for Firefox users and a blank page for Chrome Users
  • In certain conditions, the Full Disk Encryption module prevented the upgrade to Windows 10, version 2004

The new Bitdefender engine version should not require any reboot. If a reboot should be needed, it will be displayed in the RMM dashboard. Ensure the delay and reboot settings in your policies are set accordingly for your customers.

Delaying Engine Upgrades

MAV-BD Engine upgrades can be delayed by up to 10 days in the Managed Antivirus protection policy. Upgrades can also be delayed for weekends and evening hours.  Please refer to RMM’s help file for more detail on this feature.

Handling MAV-BD Reboots

  • Reboots can be automatically enabled for the upgrade process by selecting an option in the MAV policy under the “Installation Settings” tab. Automatic reboots occur within 5 minutes of taking the update. Please ensure this option is disabled if you do not want your end-user machine to automatically reboot. If the automatic reboot option is not enabled, the reboot will be displayed as a blue dot within the North Pane of the RMM Dashboard, indicating that the machine needs a reboot to complete the installation.  Reboot the machine at your earliest convenience.

Determining the version on a device:

The version of the MAV agent, as well as the MAV engine version, can be seen in 2 places – by looking at the Managed Antivirus Check (Bitdefender), or by running the Managed Antivirus Protection Report.

To see the version of the agent within the MAV check, navigate to the South Pane of the device and find the Managed Antivirus Check – Bitdefender and select the “More Information” link.  To see across devices, run the Managed Antivirus Protection Report under Reports > Managed Antivirus > Antivirus Protection Report. Ensure that the Agent Version and Engine Version columns are selected from the Column drop down.


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