Hi, here's the log output:
2017-10-12 23:02:35 :: Queued for processing at 2017-10-12 23:02:35
2017-10-12 23:02:35 :: Required backup infrastructure resources have been assigned
2017-10-12 23:02:40 :: VM processing started at 2017-10-12 23:02:40
2017-10-12 23:02:40 :: VM size: 250,0 GB (33,7 GB used)
2017-10-12 23:02:43 :: Getting VM info from vSphere
2017-10-12 23:02:49 :: Failed to create VM snapshot. Error: CreateSnapshot failed, vmRef vm-277346, timeout 1800000, snName VEEAM BACKUP TEMPORARY SNAPSHOT, snDescription Please do not delete this snapshot. It is being used by Veeam Backup., memory False, quiesce True
2017-10-12 23:02:59 :: Error: An error occurred while saving the snapshot: Failed to quiesce the virtual machine.
2017-10-12 23:02:59 :: Network traffic verification detected no corrupted blocks
2017-10-12 23:02:59 :: Processing finished with errors at 2017-10-12 23:02:59
We have tried different setting in VEEAM and no valid backup so far, it seems that the version 11.x does not contain the Vmware Tools needed to make a successful and usable backup.
In Version 10.x backup worked so it seems tha t the Tools were included...