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arcserve-KB : UDP | Agentless | Failed to open VMDK file error code 16064, error message The host is not licensed for this feature.

Last Update: 2018-03-27 15:15:30 UTC
Error Message: Agentless Backup of VMWare VM fails with the following error, Failed to open VMDK file error code 16064, error message The host is not licensed for this feature.

Environment:
vSphere 5.1
Arcserve UDP 6.5 GA \ Update 1

Cause:
This is caused by a license check mechanism change in VDDK (including VDDK 5.5.5 and VDDK 6.5.2). This happens only when ESX is version 5.1 with Essential/Standard license.

Arcserve UDP leverages VDDK libraries to interact with VMware vSphere environments to request VM snapshots, extract data from ESXi, and other operations. Starting from UDP version 6.5 Update 1, UDP includes latest version of VDDK 6.5 and 5.5.5.
 
Following entries can be seen in hbbuxxxxxxx.log

hbbuxxxxxxx.log
[2017/10/26 16:29:01:616 00 16352 00892 ] [VDDKLOG] VixDiskLibVim: VixDiskLibVim_GetNfcTicket: Get NFC ticket for [datastore1] ABACABACA04/ABACABACA04-000002.vmdk. {AFBackend.exe::AFBackupVirtual.dll(4175.385)}
[2017/10/26 16:29:02:226 00 16352 00892 ] [VDDKLOG] VixDiskLibVim: Unacceptable server edition esxExpress.vram {AFBackend.exe::AFBackupVirtual.dll(4175.385)}
[2017/10/26 16:29:02:226 00 16352 00892 ] [VDDKLOG] VixDiskLibVim: ESX/ESXi host is not licensed to use this feature. {AFBackend.exe::AFBackupVirtual.dll(4175.385)}
[2017/10/26 16:29:02:367 00 16352 00892 ] [VDDKLOG] VixDiskLib: Error occurred when obtaining NFC ticket for: [datastore1] ABACABACA04/ABACABACA04-000002.vmdk. Error 16064 at 3737. {AFBackend.exe::AFBackupVirtual.dll(4175.385)}
[2017/10/26 16:29:02:367 00 16352 00892 0X00003ec0] Failed to open VMDK file [datastore1] ABACABACA04/ABACABACA04-000002.vmdk, error code 16064, error message The host is not licensed for this feature {AFBackend.exe::VMDKIo.dll(4175.385)}
[2017/10/26 16:29:02:367 00 16352 00892 0Xffffffff] CD2DOffhostESXDisk::Open::pf_VMDKIo_OpenVMDKFileWToUTF8() failed. VMDKIOErrorString=The host is not licensed for this feature, nRet=16064 {AFBackend.exe::AFBackupVirtual.dll(4175.385)}


Solution:
-The link below has the instructions to change the VDDK version to 5.5.5,
http://documentation.arcserve.com/Arcserve-UDP/Available/V6.5/ENU/Bookshelf_Files/HTML/Solutions%20Guide/UDPSolnGuide/udp_apply_diff_ver_vddk.htm
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