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Advocate IV
Advocate IV

Webhook - How to?

Trying to understand how to setup webhooks in flow to convert an existing flow that sometimes times out but not always.  Trying to distill it down to a simple example.


  • Flow Button
  • Http - HTTP
    • Method: Post
    • URI: <Receiver's URL>
    • Headers: Content-Type application/json
    • Body: {"message": "Do Stuff"}
  • Parse Json



  • When HTTP Request is Received
  • Delay 10 minutes
  • Response
    • {"message":"Success"}

The real flow does stuff but its basically that.
So is converting this to Webhooks basically replacing the HTTP-HTTP action with HTTP-Webhook and setting the Subscribe URI to "Receivers" URL?  I tried that, but Sender never got the message / stopped running and I had to cancel it.
Also what is the unsubscribe URI?


So the basic Flow with the HTTP caller:

Caller - HTTP.png

And the Receiver - I only have the delay at 5 seconds as I'm not testing the timeout.



Successful run returning the Success Message after the 5 second delay.

Caller - HTTP - Run.png


Everything works as expected. I then added a second HTTP action to the flow for the webhook call.

Caller - HTTP and Webhook.png


Running the flow, it triggers both calls to the receiver which were 5 seconds apart from the delay.

Reciever Run History.pngCaller - Run History - multiple minutes.png


But looking at the Flow's activities, its stopped on the Webhook action


Caller - Run not finishing.png


And the run history shows its well beyond the 5 second delay so the Webhook isn't reacting to the returned message.

Caller - Run History - multiple minutes.png



Super User
Super User

Re: Webhook - How to?

Hi @bbrazeau 


I wrote a blog about this type of scenario back in 2018. Here's a link to it:


That should give you an idea of how you can use it and answer some of your questions.


If you're still struggling after following that, please let me know.

Did my reply help? Please give it a thumbs up.
Did I answer your question? Please mark my post as a solution!
If you liked my response, please consider giving it a thumbs up. THANKS!

Proud to be a Flownaut!

Community Leader: Black Country PowerApps & Flow User Group

Community Support
Community Support

Re: Webhook - How to?

Hi @bbrazeau 


Has your problem been solved by @MattWeston365 's help?
If your problem has been solved, You could go ahead and mark the post as solved by clicking “Accept as Solution” so that this thread will be marked for other users to easily identify!

Best Regards,
Community Support Team _ Lin Tu

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