question

Something here might help.
https://social.technet.microsoft.com/Forums/windows/en-US/359a1739-9c2e-4cd5-9018-b8af018a7783/missing-virutal-machines-on-hyper-v?forum=winserverhyperv

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I have an anti-virus installed on the host. Based on Microsoft KB https://docs.microsoft.com/en-us/troubleshoot/windows-server/virtualization/vm-missing-0x800704c8-0x80070033-0x800703e3#:~:text=If%20virtual%20machines%20are%20missing,configuration%20file%20was%20likely%20corruptedos, is it true that anti virus might be responsible for it?

Hi,

Please try to restart the VMMS service, check if the VMs will reappear.

Thanks for your time!
Best Regards,
Anne

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None of it is working. I have restored from the backup. My host is install with an anti virus and at the moment, the vhd is missing and nothing appear in my hyper v console. Can I know what went wrong

the vhd is missing

Sounds like either some file system corruption or possibly disk failure.

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Hi... but I will need a Microsoft tech to confirm what went wrong?

If that's what you wanted then you can start a case here with product support.
https://support.serviceshub.microsoft.com/supportforbusiness

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Hi... I don’t have a support id... cause I’m asking as there is a Microsoft kb for missing vm and the root cause is the anti virus. Hence, I will want to confirm it. Thanks

What you have described is the XML configuration file and the VHD both have been deleted from system. Seems unlikely that AV is responsible. More than likely some user is responsible.

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https://docs.microsoft.com/en-us/troubleshoot/windows-server/virtualization/vm-missing-0x800704c8-0x80070033-0x800703e3

What I’m referring is this