Windows Server Backup - Retryable Error for Hyper-V

Hi,

Recently when I'm trying to do a Windows server backup of my Hyper-V VMs, there are transient error failures during the backup attempt. The strange thing is that in the past, Windows server backup has always worked for me.

In vss admin list writers, the Hyper-V writer states retryable error.

If I restart the vmms service, sometimes the backup is successful, other times it still continues to fail. Other workarounds I have attempted are shutting down my VMs and restarting the Windows server backup - again this does not work all the time and I have to repeat such steps to get the backup to succeed.

Are there any ways that I can trace or troubleshoot why the backup is failing?

Thanks for the help.