After Data Protection Manager (DPM) backup fails, you are unable to delete broken recovery checkpoints for a virtual machine that was created by Hyper-V. When you try to do this, you discover that there's no option listed for a virtual machine in the Hyper-V Manager Console GUI as shown below.
For complete details regarding this problem as well as a resolution, please see the following:
KB3059372 - You can't delete a recovery checkpoint for a virtual machine in Data Protection Manager ( https://support.microsoft.com/en-us/kb/3059372/ )
J.C. Hornbeck | Solution Asset PM | Microsoft GBS Management and Security Division
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DPM 2012 R2