Agent update


  1. You want to update several Hyper-V agents at once under Settings - Agents,
  2. When you select required agent machines, the following error is displayed:

More than one Agent for Hyper-V is selected. Simultaneous update of multiple Agents for Hyper-V is not possible. Please update these agents one by one.


Agents are not auto-updated to C21.09.

When you try to update agents from the service console and click on "Update", the agent status changes to “Updating” but the update is not running.


Issue in the product.

Improvements to platform behavior have been made in Acronis Cyber Cloud 21.10, but the auto-update not working might still happen due to an open issue PLTFRM-33096. 


Agent installation or update on Windows Server 2008 / R2, Windows 7, Vista fails with the following error:

Windows cannot verify the digital signature for this file. A recent hardware or software change might have installed a file that is signed incorrectly or damaged, or that might be malicious software from an unknown source


The issue is caused by SHA-2 digital signatures missing on older Windows systems.


Installing or updating C21.11 or C21.12 agent on CloudLinux7.9 or CloudLinux8.5 (8.x) fails to (re)build snapapi26 and snumbd26 kernel modules. This happens after the latest updates to CloudLinux 7.9 and 8.5 (8.x in general).  trueimage-setup.log contains an error from DKMS about the use of deprecated feature: REMAKE_INITRD in the dkms.conf files of the agent's kernel modules.