To resolve this issue, start the Windows Virtual Disk service:
1. Log in to the Windows operating system as an Administrator.
2. Click Start, type services.msc, and press Enter.
3. Right-click the Virtual Disk service and click Start.
4. Launch backup
If this does not resolve the issue, disable VMware snapshot provider in the affected virtual machine:
1. Disable the VMware Snapshot provider service in the guest operating system.
2. Restart the Volume shadow copy service.