Virtual Appliance

This article describes the troubleshooting steps in case of a Virtual Appliance installation failure

When troubleshooting LAN-free backup issues, you might be asked to collect VMware vddk logs.

Virtual Appliance

  1. Open appliance command line shell (Ctrl+Shift+F2 while appliance GUI console is opened) or connect to appliance via WinSCP

Backup of Virtual Appliance fails with the following error:

Cannot find GXT item type 'mms::disk::disk'.


  1. You want to update several Hyper-V agents at once under Settings - Agents,
  2. When you select required agent machines, the following error is displayed:

More than one Agent for Hyper-V is selected. Simultaneous update of multiple Agents for Hyper-V is not possible. Please update these agents one by one.

You are backing up a virtual machine with Windows Server 2019 on ESXi 6.5 or 6.7 using Agent for VMware (Windows) or Virtual Appliance,
Agentless backup finishes with warning

Creating a crash-consistent snapshot of virtual machine because the creation of its application-consistent snapshot has failed. An error occurred while saving the snapshot: Failed to quiesce the virtual machine