Installation of third-party endpoint security software (e.g. BitDefender Endpoint Security) fails or hangs on the machine where Acronis Agent is installed, even when Acronis Cyber Backup license is used or Antivirus & Antimalware protection is disabled.


Acronis Cyber Protect Agent and third-party endpoint security software use the same network filtering driver (bddci.sys) that cannot be shared.


You have enabled vulnerability assessment and see a list of detected vulnerabilities. Patch installation is not available (instead of the Install patches icon you see a question mark ? icon) for some of the detected vulnerabilities:


The Install patches option is not available when there are no available patches yet.

Vulnerability assessment and Installing software updates complete with a warning.

In All properties of the affected activity, you can see:

"code": "warning",
"warnings": [
"domain": "ATPAgent",
"code": "PmWinUpdatesPaused",
"reason": "PmWinUpdatesPaused"


You have Microsoft Security Essentials enabled on a machine. You install Acronis Agent on this machine and want to use cyber protection features. You notice that Acronis Cyber Protection does not work properly when MSE is enabled.


  1. A tenant has (Legacy) Cyber Backup - Standard Edition,
  2. You create or edit a protection plan and successfully enable Active Protection in that plan,
  3. After clicking on Apply or Save, the Active Protection module is disabled:


Issue in the product.


This issue has been fixed in Acronis Cyber Cloud 21.05 Hotfix 1.

The Antivirus and Antimalware protection module allows you to protect your machines from all recent malware threats. However, is can sometimes affect performance of other software. Please report these issues to Acronis, so that we can investigate and adjust our software.

Cyber Protection represents an all-in-one cyber protection solution that integrates backup and recovery, disaster recovery, malware prevention, security controls, remote assistance, monitoring, and reporting.

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This article describes various alerts that appear in cases when Acronis Antivirus & Real-time protection conflicts with a third-party antivirus or Windows Defender.

Alert 1 – Windows defender is blocked by a third-party antivirus software: Windows defender is blocked because Acronis cyber protect is installed on machine

In this case, both Windows defender and Acronis real-time protection are enabled. It is not possible to run two antiviruses in one machine as they will conflict with each other.