vRanger job fails with the error above when quiese enable is set against a windows 2008 VM. In Virtual Center you will see :
Cannot create a quiesced snapshot because the snapshot operation exceeded the time limit for holding off I/O in the frozen virtual machine
Unless one is using our vRanger 5.3.1 client + its vzshadow binary, this type of guest VSS function / quiesce enabled-derived backup job result can occur.
Upgrade to vRanger 5.3.1 + implement its vzshadow quiescing tool.
If this is not an acceptable workaround, please contact Quest Support and open a support ticket.