Workflow 2013

Question

After install workflow 2013 and verify all service and process are working correctly, I get this message when trying to perform a simple send to mail workflow.

Retrying last request. Next attempt scheduled after 6/7/2023 11:47 AM. Details of last request: HTTP  to https://intranet.testing.com/sandbox/_api/web/lists(guid'd64761af-6fb5-41a2-985e-1529c3c13568') Correlation Id:  Instance Id: 80486e19-9ec7-4239-b968-1dd816d04cf0

System.Net.WebException: Unable to connect to the remote server ---> System.Net.Sockets.SocketException: A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond
   at System.Net.Sockets.Socket.InternalEndConnect(IAsyncResult asyncResult)
   at System.Net.Sockets.Socket.EndConnect(IAsyncResult asyncResult)
   at System.Net.ServicePoint.ConnectSocketInternal(Boolean connectFailure, Socket s4, Socket s6, Socket& socket, IPAddress& address, ConnectSocketState state, IAsyncResult asyncResult, Exception& exception)
   --- End of inner exception stack trace ---
   at Microsoft.Workflow.Common.AsyncResult.End[TAsyncResult](IAsyncResult result)
   at Microsoft.Activities.Hosting.HostedHttpExtension.HttpRequestWorkItem.OnEndComplete(ScheduledWorkItemContext context, IAsyncResult result)
Retry now

Answer 1

Whether all workflows occur this issue or only one workflow?

Go to IIS and make sure the workflow application pool is running.

And also make sure all firewalls are off.

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