I suddenly started getting below error when i click "Workflow" option at top ribbon of List/Library.
Application error when access /_layouts/15/Workflow.aspx, Error=The remote server returned an error: (404) Not Found.
Then i tried to publish workflow from SharePoint desinger and got below error:
Microsoft.Workflow.Client.WorkflowManagementException: A response was returned that did not come from the Workflow Manager. Status code = 403: Access Denied
Access Denied (policy_denied)
Your system policy has d