The purpose of this article is to provide supplementary instructions for properly deploying a Windows worker plan when using TKGI with the Management Console that has already deployed a TKGI environment.
Because of the nature of TKGI Management Console, the console will not deploy a Windows worker plan without a user-created Windows stemcell manually applied in OpsManager. In order to make the Windows stemcell available for the Management Console to deploy, you must create a placeholder Windows plan in OpsManager and provide a Windows stemcell that can be used by the Management Console to create a new Windows worker plan to overwrite the placeholder Windows worker plan in OpsManager.
https://docs.pivotal.io/tkgi/1-9/console-windows-workers.html
https://docs.pivotal.io/application-service-windows/2-10/create-vsphere-stemcell-automatically.html#create-base-vm