Veeam backup failed – the operation is not allowed in the current state

Решени: Отключить машину которую бэкапим, закончить бэкап, включить.
Решение от VMWare

Solution
To resolve this issue restart the VMware agents:

Ensure that the Virtual machine startup / shutdown with host feature is disabled before this step.

Restart the management agents on the host. For more information, see Restarting the Management agents on an ESX or ESXi Server (1003490).

On vCenter Server, restart the vCenter and Management Web services. For more information, see Stopping, starting, or restarting vCenter services (1003895).

Attempt the snapshot again.

The operation succeeds and the corresponding log entry for the snapshot attempt reflects a transition from ON to CREATE SNAPSHOT instead of ON_SHUTTING_DOWN.