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Hyper V backup failing

Scott Bates 1 Reputation point
2020-08-27T12:16:06.323+00:00

Server 2012 R2 STD

I have a Hyper V host with 2 virtual machines running on it.

The issue started when our Veeam backup software started to fail backing up the one VM. After transferring ~10GB of data it would just fall off and fail. I worked with Veeam extensively on this.

We tried a local Hyper V Windows backup and that also failed around the 10GB mark with this error. Incorrect function
With this test backup I changed the storage from the NAS to local storage on the host but it made no difference.

The host and the VM are both fully updated. They aren't struggling for system resources during backups. No network drops on the host, VM or NAS. The other VM on the host backs up just fine.

I referenced this article to no success.
https://support.microsoft.com/en-us/help/2918371/scheduled-backup-fails-with-event-backup-id-517-and-error-0x80780049-i

Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
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