I ran into another error while backing up a ESXi VM.

Is this because the VM is thick provisioned? Not sure how to tell if it is thick or thin. Or is it because of certificate verification issues?

I made sure there is enough space on the target location, 830GB free space for a 200GB VM.

Thanks for your support so far! Making great progress.


================================== 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: 4/1/2016 3:32:57 PM
Application Settings:
- SMTP Server =
- SMTP Username =
- SMTP Password =
- SMTP From Address =
- Notification Recipients =
- VMware Virtual Disk Manager Application Directory = C:\VMwareVDDK\bin
- Disable VMware Virtual Disk Manager Logging = True
Execution Arguments:
- Virtual Machine = Windows Server 2012
- Server = 10.154.32.7:22
- Server Username = root
- Server Password = **********
- Job = Test
- Job Type = Backup-Image-SSH
- Backup Root = C:\ESXiBackup
- Disk Exclusion = None
- Backups to Keep = 3
- Quiesce Guest File System = True
- Snapshot Virtual Machine Memory = False
- Create Snapshot Task Timeout = 15
- Remove Snapshot Task Timeout = 15
- Encrypt Temporary Password File = True
- Compression Level = None
- Maximum Log Size = 1024
- Backup Type = Image-Full
SMTP server not provided, e-mail notification is disabled.
Server Platform: VMware ESXi 5.5.0 1623387
Virtual Machine Guest OS: Microsoft Windows Server 2012 (64-bit)
License:
- Type: Perpetual
- Status: Active
- Edition in Use: Standard
Backup Folder: C:\ESXiBackup\Windows Server 2012
Backup: 160401_153308
No existing temporary snapshots found.
Temporary Snapshot: vBackup-TMP-160401_153308
VMware Virtual Disk Manager: VMware Virtual Disk Manager - build 2454786
VMware Virtual Disk Manager response for Hard disk 1: [datastore1] Windows Server 2012/Windows Server 2012-000003.vmdk:
VixDiskLib: Invalid configuration file parameter. Failed to read configuration file.

SSL_VerifyCbHelper: Certificate verification is disabled, so connection will proceed despite the error

[NFC ERROR] NfcNetTcpRead: bRead: -1

[NFC ERROR] NfcNet_Recv: requested 261760, recevied only 114688 bytes

[NFC ERROR] NfcFile_RecvMessage: data recv failed. retval = 3, expected 261760

[NFC ERROR] NFC_NETWORK_ERROR

Failed to convert disk: Operation completes asynchronously (0x300004650).

i Tips:
- Even though an SSL certificate error was encountered, certificate verification is disabled causing the error to be ignored. To correct certificate verification error(s), install a valid CA-signed certificate on your host server and install a valid CA-signed root certificate on your vBackup server.
- The 'NFC read' error is caused by a limitation in VMware Virtual Disk Development Kit (VDDK) and how VDDK handles reading and writing thick-provisioned virtual disks. This then effects host servers licensed with Thinware vBackup Standard Edition (and Advanced and Professional Editions when a backup job's compression level setting is set to none). To resolve this, for Thinware vBackup Advanced and Professional Editions, simply set the backup job's compression level to basic or advanced. For Thinware vBackup Standard Edition, the virtual machine's virtual disk(s) must be converted to thin-provisioned (backup of thick-provisioned virtual disks is not supported with Thinware vBackup Standard Edition).
E Unable to complete backup. Unable to verify successful transfer of virtual machine virtual disk file C:\ESXiBackup\Windows Server 2012\160401_153308\Windows Server 2012-000003.vmdk.
Temporary snapshot removed.
Temporary files successfully removed.
Backup data folder deleted in cleaning up after job failure.
Process Completed: 4/1/2016 3:54:02 PM
Elapsed Time: 21 minutes and 5 seconds