@Prakash Kumar Singh
Whether 2013 workflows be created and used normally now?
1.Try to delete the workflow service application proxy and register workflow service by using following command. Then reboot the server.
Register-SPWorkflowService -SPSite "http://myintranetdomain.com" -WorkflowHostUri "http://localhost:12291/" -AllowOAuthHttp –Force
2.Check the ULS logs to find clues.
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