===== [V7] ISSUE: Failed to take VM recovery checkpoint. Error = Object reference not set to an instance of an object (Hyper-V VM backup job) ===== Article ID: 5337
Reviewed: 2018-05-04

Product Version:
AhsayOBM: Pre-7.15.4.10
OS: Windows ATTENTION 1st January, 2022: v7 officially End-of-Life [details] ===== Problem Description ===== When performing a Hyper-V VM backup, the following error message is displayed on the backup client interface, or in the backup report:
No. Type Timestamp Log
* ... ... ...
* info ... Start running pre-commands
* info ... Finished running pre-commands
* erro YYYY/MM/DD hh:mm:ss Failed to take VM recovery checkpoint. Error = Object reference not set to an instance of
an object., vm: virtual_machine_id
* ... ... ...
===== Cause ===== This issue can occur if the affected virtual machine is being backup by multiple backup sets that run at the same time (e.g. overlapping backup jobs of multiple backup sets). ===== Resolution ===== To resolve the issue, patch the AhsayOBM application to version 7.15.4.10 or above.  The instructions can be found by Clicking Here. ===== Keywords ===== vm, virtual, machine, hyper-v, hyperv, hyper, object, reference, instance