Physical to virtual backup jobs fail if the vstor driver is not installed.
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Article ID: 100026086
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Description
Error Message
The job failed with the following error:
“Failed to mount the disks of the virtual machine”
Cause
A local installation of the Agent for Windows fails to install the vstor driver.
Resolution
- To determine if the driver is installed correctly, at a command prompt, type the following:
sc query vstor2-mntapi10-shared
If the driver is installed and running, the command returns the following information:

- If the driver is not installed, do the following to install the driver:
- On the remote computer, go to the Backup Exec installation directory:
- \VMware\VixDiskLib\bin\
- Typically, this directory is \Progam Files\Symantec\Backup Exec
- Right-click the vstor2-mntapi10-shared.inf file.
- Select Install.
Issue/Introduction
Physical to virtual backup jobs fail with “Failed to mount the disks of the virtual machine”
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