67058: Acronis Cyber Backup 12.5: During local agent update to build 16342 connection to Management Server fails with "Failed to connect to machine. HTTP status code: 500"

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Last update: 31-05-2021


  1. You have installed Management Server of build 16342 or updated the existing Management Server to this build.
  2. You launch the installation file of Build 16342 on a machine to install or update Agent locally.
  3. You specify the IP address or name of the Acronis Management Server where the agent should be registered. Connection fails with the following error:

Failed to connect to machine. HTTP status code: 500" error.

The error reproduces for connection with credentials and connection without authentication.


Issue in the product.


This issue has been fixed in Build 16343, please download the latest build.

As a workaround for earlier builds, extract the .msi files for Agent from the setup file and perform unattended installation using Windows Installer. See Acronis Cyber Backup 12.5 and 12: unattended installation for more information.