This warning indicates that the VMware Tools are either not installed or are not running in the virtual machine.
This message is safe to ignore when performing a migration.
To workaround the warning, perform one of these options:
Ensure that the VMware Tools are installed in the virtual machine before performing a migration.
Ensure that the virtual machine has been running long enough for the operating system to be completely started before performing a migration.
Restart the VMware Tools service.
To restart the VMware Tools service:
Click Start > Run, type services.msc, and press OK.
Right-click VMware Tools Service and click Restart.
If your issue continues to exist, reinstall VMware Tools to ensure that you are on the latest version.