.vhd file corruption

I have performed a few steps below and it seems like the .vhd file is corrupted.

1. When loading the .vhd file in Hyper-V, we got error "the file or directory is corrupted and unreadable";
2. We tried mount the .vhd file directly to the Hyper-V host, but still got the same error;
3. With vhdtool, the repair attempt as failed;
4. Disabling the antivirus service and then re-mount the .vhd file, still got the same error;

May I know if Microsoft provides any support for this? and what normally is the root cause?

Thank you.