All SP workflows in the SharePoint site, suddenly stopped working!
When I tried to republish a workflow, I got this error: “Unable to
properly communicate with the workflow service”
Solution:
Verify that all the
following Windows NT services are started:
a.
WorkflowServiceBackend
b.
Service Bus Backend
c.
Service Bus Gateway
d.
FabricHostSvc
1.
Open IIS Manager.
2.
Under Application Pools, right-click WorkflowMgmtPool, and select Recycle… from
the context menu.
In IIS find out the WorkflowHostUri
Run the below PowerShell command as an admin:
Register-SPWorkflowService -SPSite "http://localhost/"
-WorkflowHostUri "http://localhost:12291/" -AllowOAuthHttp –Force
Please see https://msdn.microsoft.com/library/azure/jj193529(v=azure.10).aspx#WorkflowManagementService