When attempting an agentless backup of a Windows and Linux virtual machine, you receive the error message, "Critical Backup Failure: Failed to create VM snapshot at second attempt - aborting."
- Datto Agentless Backups
The error may result from stopped or disabled services on the virtual machine.
On a Windows VM
- Open services.msc.
- Start the Virtual Disk service. Then, right-click the service and go to Properties. Set the Startup Type to Automatic.
- Restart the virtual machine, and return to services.msc after the virtual machine finishes its startup process.
- Locate the VMware Snapshot Provider service. Then, right-click the service and go to Properties. Set the Startup Type to Disabled, and stop the service.
- Restart the VMWare Tools service.
On a Linux VM
In the Linux VM, log in as root and run the following commands to restart VMware tools: