Workflow Manager SharePoint 2013 Installation Verification
If you follow Microsoft’s Install and configure workflow for SharePoint Server 2013, in the verification section it says “When you have completed the installation of SharePoint 2013 Workflow Manager you can check Central Administration”. And if everything looks good you will be able to create workflows in Central Administration.
So if everything looks good in Central Administration:
Unfortunately in some cases even when all looks good, Designer displays the following:
“The option for the SharePoint 2013 Workflow platform is not available because the workflow service is not configured on the server. Please contact your server administrator.”
SharePoint 2013 Workflow Manager Post Installation Steps
So there are two main issues that I have seen cause this situation.
New Workflow Manager Proxy not selected for Web Application
The first is that the client is not using the default service application
SharePoint 2013 Workflow Service Store SPFeature not enabled
The second is that the 2013 Workflow Service Store SPFeature is not enabled for the current site.
Enable-SPFeature -Identity WorkflowServiceStore –Url http://YOURURLHERE
So those two post-installation steps are the only issues I have found after you successfully get the Workflow is Connected message where everything should work.