The recommendation is to disable drive monitoring
Disable
Remove the grayed out machines from Acronis Management Server and then add them back to solve the issue
The "Manage this machine" button is grayed out when connected to the Acronis Management Console machine via RDP. This is normal behavior
Add the user to the root group
The issue is with the User Account Control turned on
Provide the username in the form of DOMAIN\Username; make sure the user is a member of Administrators group, Domain Admins group, Enterprise Admins group; delete the v8.0 subkey from Windows Registry
How to disable Windows shell extensions that show up in the context menu after installation of Acronis True Image
This is a limitation of Acronis Bootable Media
This has been fixed
The serial key you are attempting to enter is incorrect
It is strongly recommended not to change Organization name
This has been fixed
Issue is fixed in Acronis Backup 11.5 (Acronis Backup & Recovery 11.5). Upgrade or remove the space gap.
Launching Acronis Backup & Recovery 11 Standalone or pressing "Manage this machine" button asks for credentials when connected to the machine via RDP. This is normal behavior
There are either not enough rights to back up the remote machine, or Acronis Agent serial key did not register properly
There is no progress bar shown on a disabling or enabling operation
Make sure that target agent is not Standalone
Introduction
This article explains how to temporarily turn off Windows Defender Antivirus in case it conflicts with Acronis software on Windows 10, e.g. prevents successful software installation or update/upgrade.