Workflow Manager Register Error , SharePoint 2013 on Windows 2012 R2

Microsoft SharePoint 2013 SP1, supports SharePoint installation on Windows 2012 R2 servers.

“SharePoint 2013 with service pack 1” and "Windows 2013 R2" can install without any errors.
when configuring Workflow Manager i had face many problem.

1. The most common error is “Register-SPWorkflowService The remote server returned an error: (404) Not Found”

To solve this issue we have to install
Service Bus Update
workflow manager cu 2
Before that ensure the workflow installation login should have the highest privilege as user()

 SharePoint Designer 2013: App Management Shared Service Proxy is not installed

Standard

SharePoint Designer 2013: App Management Shared Service Proxy is not installed

Scenario:
When compiling the workflows in SharePoint Designer 2013 and publishing the workflow I faced the following Errors were found when compiling the workflow.

Further details on the error revealed Microsoft.SharePoint.SPException: App Management Shared Service Proxy is not installed.

Approach:

In order to resolve that I did the following:

Go To

• Central Administration > Manage Services on Server
• Check if App Manage Service is running
• Central Administration > Application Management > Manage Service Application.
• Check the App Management Service application is created, if not then create the App Management Service application.

Ensure: When creating the App Management Service it is important that this is enabled