Error VHDx:CVhdxDisk.InitialValidation PAYLOAD_BLOCK_ZERO

[biapar]

I try to made a backup of a vps on Hyper-V Win2016 and Veeam Community but for a converted machines from KVM I've this error:
Processing 103-ControlPanel Error: VHDx:CVhdxDisk.InitialValidation: Incorrect bitmap entry type (PAYLOAD_BLOCK_ZERO): See [MS-VHDX-v1.00-20160128] specification section 3.4.1.2.
Agent failed to process method {VHDX.GetDiskInformation}.

How solve?
Thanks.

[biapar]

Solved.
I edit the virtual disk to made a conversion from vhdx to vhdx from Hyper-v panel.

[chopsywa]

This definitely works, but it's not a fix. I have hundreds of gigs in VHDXs that I would need to convert. Is there any documentation on what needs to be done that could possibly be fixed with a Microsoft tool, or a partition table editor?