Failed to quiesce the guest and Failed to copy file to guest vm (13 You do not have access rights (4045535)

Title: 'Failed to quiesce the guest' and 'Failed to copy file to guest vm (13 You do not have access rights to this file)' error message when backing up a Windows Virtual Machine.
Date: Feb 11
Product & Version: NetVault 8.5 and above
OS Version: Windows
Module & Version: VMware Plugin 1.2.1
Application version: ESX vSphere 4 Advanced


Symptoms:
Following errors found in the Binary Log:

1) Error 2010/12/27 08:19:39 381 Data Plugin KVDASI2 Failed to quiesce the guest within VM 'kvgis1' uuid '422ef564-d880-2efd-f5ab-23602d0e262f'

Mit angehänten text:
Module/Thread Id Code Time Message
VMWBCKUP:04428 83 0 81936 VM is being managed by ESX server of version 208167
VMWBCKUP:04428 66 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/libxml2.dll
VMWBCKUP:04428 68 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/glib-2.0.dll
DYNLIB :04428 2 0 81936 Error loading dynamic library: Das angegebene Modul wurde nicht gefunden.
VMWBCKUP:04428 89 1 81936 Error loading C:/Program Files (x86)/BakBone Software/NetVault/dynlib/libgmodule-2.0.so.0
VMWBCKUP:04428 70 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/gobject-2.0.dll
VMWBCKUP:04428 72 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/gthread-2.0.dll
DYNLIB :04428 2 0 81936 Error loading dynamic library: (null)
VMWBCKUP:04428 81 1 81936 Error loading C:/Program Files (x86)/BakBone Software/NetVault/dynlib/vmcryptolib.dll
VMWBCKUP:04428 78 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/ssleay32.dll
VMWBCKUP:04428 76 1 81936 Successfully loaded C:/Program Files (x86)/BakBone Software/NetVault/dynlib/libcurl.dll
VMWBCKUP:04428 74 1 81936 Successfully load