Hi @Mudasir Ghulam ,
I'm glad to hear you solve the problem ,if you have any issue about SharePoint, you are welcome to raise a ticket in this forum.
By the way, since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others." and according to the scenario introduced here: Answering your own questions on Microsoft Q&A, I would make a brief summary of this thread:
[Sharepoint Workflows Email action]
Issue Symptom:
I am facing very strange issue,
I migrated Project server from development to Production environment. Everything went successful.
However, only one issue i am facing which is workflow is not sending an Email.
Send Email (assigned to single user) or Assign a Task both are failing in sending Email.
A task gets assigned successfully to user but he is not receiving email, similarly send email command is failing.
I checked user profiles, the email is already there, tried reset, reinstalling WFM, Profile services but nothing working.
Also, no correlation Id, the error message looks like below:-
System.Net.WebException: Exception encountered while processing the HTTP request. Exception details: 'HttpClient.SendAsync task was canceled. TraceActivityId=c03477ae-7cca-4f2c-ad49-558c20ad629e'.
at Microsoft.Workflow.Common.AsyncResult.EndTAsyncResult
at Microsoft.Activities.Hosting.HostedHttpExtension.HttpRequestWorkItem.OnEndComplete(ScheduledWorkItemContext context, IAsyncResult result)
Current status:
Apparently it was the networking issues, in between the servers of the farm that was causing the issue.
You could click the "Accept Answer" button for this summary to close this thread, and this can make it easier for other community member's to see the useful information when reading this thread. Thanks for your understanding!
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.