In order for Windows nodes to use the openshift-cluster-csi-drivers/internal-feature-states.csi.vsphere.vmware.com ConfigMap, which contains the configuration for vSphere CSI, `csi-windows-support` must be set to true.
This is documented here: https://github.com/kubernetes-sigs/vsphere-csi-driver/blob/833421f42475809b4f76ea125095b5120af0f8e1/docs/book/features/csi_driver_on_windows.md#how-to-enable-vsphere-csi-with-windows-nodes

Without this, a separate ConfigMap must be created and used for a user deploying Windows vSphere CSI drivers.

Always

1. Add a Windows node to the cluster
2. Deploy vsphere csi daemonset for windows nodes as documented upstream
3. Add a Windows pod with a pvc mount

The pod is unable to mount the volume as windows support is not enabled

The pod can mount the volume