Register Workflow manager to sharepoint

Question

Want to do the opposite operation to this :

Register-SPWorkflowService -SPSite http:// my_site_name -WorkflowHostUri http://host_name :12291 -AllowOAuthHttp

Because I have an error message :

"the association already exist"

Answer 1

Their is no Opposite of register workflow command,You have to run the same command with -force parameter and it will un registered it from old site and re register it with new site.

Register-SPWorkflowService -SPSite http:// my_site_name -WorkflowHostUri http://host_name :12291 -AllowOAuthHttp -force