PVC in Pending state after install of UPI vSphere OCP 4

Issue

• OCP UPI vSphere with cluster-wide proxy installation all created PVC's with default StorageClass in Pending status.
• ProvisioningFailed error on any created PVC's with thin StorageClass with cluster-wide proxy configured.

• Describe of created PVC displays the following exception under Events.

  $oc describe pvc pvc-1
  Name:          pvc-1
  Namespace:     openshift-operators-redhat
  StorageClass:  thin
  Status:        Pending
  Volume:
  Annotations:   volume.beta.kubernetes.io/storage-provisioner: kubernetes.io/vsphere-volume
  Finalizers:    [kubernetes.io/pvc-protection]
  Capacity:
  Access Modes:
  VolumeMode:    Filesystem
  Used By:       pvc-1
  Events:
    Type     Reason              Age                      From                         Message
    ----     ------              ----                     ----                         -------
    Warning  ProvisioningFailed  3m20s (x19779 over 30d)  persistentvolume-controller  Failed to provision volume with StorageClass "thin": 403 
    Forbidden