Configuring Windows Server Backup on Network Share. Getting "A specified logon session does not exist. It may already have been terminated"

Dear Windows Team,

I am getting Error "A specified logon session does not exist. It may already have been terminated" while configuring BareMetal backup using Windows Server Backup with Network Share option.

All Windows Servers are configured to put the backup on a Highly-available File server connected with SAN. only 2 servers are giving this error while configuring backup. NTFS and Share Permissions are in-place and configured on the remote share.

Operating systems of both the configured server and file server are Windows Server 2008 R2. I have tried various user accounts (including Local Admin, Domain admin & Enterprise Admin).

 Any thought/idea to quicken the troubleshooting process?

Thanks.