If the Hyper-V service is stopped, you will see the "Failed to Obtain an Instance of Service Class 'Msvm_Virtualsystemmanagementservice'" entries in Acronis logs. To fix this issue, you have to start the Hyper-V service manually on Hyper-V host

Symptoms

If the Hyper-V service is stopped on Hyper-V host, you will get errors in Acronis logs similar to the following ones:

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Log Entry Details
--------------------
Type: Error
Date and time: 12/12/2012 5:55:57 AM
Backup plan: [None]
Task: [None]
Code: 5,439,552(0x530040)
Module: 83
Owner: Acronis Agent User
Message:
There is an error with the virtualization server of type 'Hyper-V'.
Additional info:
--------------------
Error code: 64
Module: 83
LineInfo: d2490998ec005cc9
Fields: $module : disk_bundle_vs_37503
Message: There is an error with the virtualization server of type 'Hyper-V'.
--------------------
Error code: 1
Module: 83
LineInfo: ba3fdb9882f23361
Fields: $module : hv_srv_vs_37503
Message: Failed to obtain an instance of service class 'Msvm_VirtualSystemManagementService'.
--------------------
Acronis Knowledge Base: http://kb.acronis.com/errorcode/
Event code: 0x00530040+0x00530001

Cause

The Hyper-V service is not running and thus cannot respond to the requests.

Solution

Please start the Hyper-V service:

1. Connect to the Hyper-V host;
2. Go to Start-Run -> services.msc
3. Locate the following service and start it:

   Hyper-V Virtual Machine Management

More information

See also:

• Microsoft TechNet: Hyper-V: The Hyper-V Virtual Machine Management service must be running