We are using ESXi 6.0.0, vbackup v4.0.2. We are trying to backup a thin provisioned 16gb VM, but receiving an error -
"CRITICAL: Unable to retrieve virtual machine ID. Error while creating 'virtualmachine' file. FATAL ERROR: Network error: Connection timed out"

SSH is enabled. I can see "Verifying virtual machine exists on server... Virtual machine located successfully." logged. There are no licensing issues reported. Its a high spec server in a datacentre so has excellent network connections.

Any help you can offer would be sincerely appreciated.

================================== LOG START ==================================
Thinware(R) vBackup(R)
Version: 4.0.2.2754 (Version 4.0, Update 2)
Copyright (c) 2009-2016 Thinware, Inc. All rights reserved.
Visit us at: www.vbackup.com
Process Started: 06/09/2017 12:58:45
Application Settings:
- SMTP Server =
- SMTP Username =
- SMTP Password =
- SMTP From Address =
- Notification Recipients =
- VMware Virtual Disk Manager Application Directory = C:\Program Files (x86)\VMware\VMware Virtual Disk Development Kit\bin
- Disable VMware Virtual Disk Manager Logging = True
Execution Arguments:
- Virtual Machine = Internal_Management
- Server = XXX.XX.XX.XXX:22
- Server Username = root
- Server Password = ************
- Job = Backup_test
- Job Type = Backup-Image-SSH
- Backup Root = E:\
- Disk Exclusion = None
- Backups to Keep = 1
- Quiesce Guest File System = True
- Snapshot Virtual Machine Memory = False
- Create Snapshot Task Timeout = 15
- Remove Snapshot Task Timeout = 15
- Encrypt Temporary Password File = False
- Compression Level = None
- Maximum Log Size = 1024
- Backup Type = Image-Full
- Debug = after
SMTP server not provided, e-mail notification is disabled.
Server Platform: VMware ESXi 6.0.0 3620759
Virtual Machine Guest OS: Red Hat Enterprise Linux 7 (64-bit)
License:
- Type: Perpetual
- Status: Active
- Edition in Use: Standard
Backup Folder: E:\Internal_Management
Backup: 170906_125901
No existing temporary snapshots found.
E Unable to complete backup. Unable to retrieve virtual machine ID. Error while creating 'virtualmachine' file. FATAL ERROR: Network error: Connection timed out.
i Debug mode enabled, clean up of temporary files bypassed.
i Debug mode enabled, clean up after job failure bypassed.
Process Completed: 06/09/2017 12:59:22
Elapsed Time: 37 seconds