Acronis Backup & Recovery 10: Error in Logs "Failed to enumerate the WMI class object"

Make sure that Acronis Managed Machine Service runs under account that belongs to Administrators group

This article applies to:

Acronis Backup & Recovery 10 Advanced Server
Acronis Backup & Recovery 10 Advanced Server - Virtual Edition
Acronis Backup & Recovery 10 Server for Windows
Windows Server 2008 R2

Symptoms

The operation log of Acronis Backup & Recovery 10 shows the following message:
Failed to enumerate the WMI class object

OR
You try to connect to the Acronis Backup & Recovery 10 Agent on the local machine. Connection fails with the error:
Failed to enumerate the WMI class object

(!) This issue is specific to Windows Server 2008 R2.

Cause

The user under which Acronis Managed Machine Service (MMS) is started is not a member of Administrators group.

Solution

Add the user under which MMS runs to domain Administrators group or run MMS under a domain Administrator account.

Adding MMS service user to Domain Administrators

On the machine with the Acronis Agent for Windows, go to Start-Run -> services.msc -> and locate Acronis Managed Machine Service. Note the user name in Log on as column;
On the domain controller, go to Start-Run -> dsa.msc to open Active directory users and computers ;
Right-click on the user that MMS runs under and select Add to group;
In Select Group window type Administrators in the available field, press Check names, then click OK;
Restart MMS: go to Start-Run -> services.msc -> right-click on Acronis Managed Machine Service and select Restart.

Changing MMS user

On the machine with the Acronis Agent for Windows, go to Start-Run -> services.msc -> and locate Acronis Managed Machine Service.
Right-click on Acronis Managed Machine Service and and select Properties -> Log on tab;
Select This account and specify an account that belongs to Administrators group in the domain;
Restart MMS: right-click on Acronis Managed Machine Service and select Restart.

More information

This issue is specific to Windows Server 2008 R2. If you receive this error in different environment, the issue is not covered in this article and needs investigation. In this case please contact Acronis Customer Central.

Knowledge Base

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