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surfingtiger
Regular Visitor

When a HTTP Request is received - Authentication Trigger

Hi All,

 

We have just had the ability to create the 'When a HTTP Request is received' trigger with the option for 'Who can trigger the flow?' enabled. Add OAuth authentication for HTTP request triggers - Power Automate | Microsoft Learn

surfingtiger_0-1696242322960.png

 

When trying to use this, it seems that there is something missing from the documentation, or from the setup of the flow, since every time I try to call the flow, it gives the error below:

 

{
    "error": {
        "code": "DirectApiAuthorizationRequired",
        "message": "The OAuth authorization scheme is required. Please add authentication scheme and try again."
    }
}

 

The documentation does talk about this authentication headers and tokens, but I was expecting the standard Microsoft 365 login screen before the flow would run, rather than having to implement OAuth myself manually, which is what is seems like I will need to do. Can anyone confirm what an example request looks like, or provide more documentation? 

 

Given that this is now the default behaviour for this connector, and that this is a huge step up in terms of security, I hope there is a simple way for us to implement this rather than having to jump through hoops or not possible at all.

12 REPLIES 12
FLMike
Multi Super User
Multi Super User

Hi,

 

I know you said you followed what it said, but there are multiple ways, can you provide exactly what you did? And no this is just an end point, its not intended to cause a login box. Its just an End Point that supports OAUTH.

 

If you have done any other OAUTH before, it the same.


Cheers
If you like my answer, please Mark it as Resolved, and give it a thumbs up, so it can help others
Thank You
Michael Gernaey MCT | MCSE | MCP | Self-Contractor| Ex-Microsoft
https://gernaeysoftware.com
LinkedIn: https://www.linkedin.com/in/michaelgernaey

surfingtiger
Regular Visitor

I think that's my mistake then. I was hoping to use this to create link in an email or in a SharePoint list that could only be clicked by users inside my tenant, but it sounds like this is not what the intention of this functionality is.

 

Do you know of any way that I could put the user through authentication, then divert back to the link, without having to setup an app in the Azure portal?

 

 

Hi @FLMike, I'm wondering if you could help me with what I would need to include in the request to achieve OAuth using client credentials in a request made from a React App? I am aware that I would need to include claims in the request, including "aud", "iss," and "tid". I believe "aud" should be "https://service.flow.microsoft.com" and "tid" is just tenant id? But I'm unsure of the correct value for "iss". Please correct me if I've got the wrong value on "aud" too. Any help much appreciated! What I would ideally ask for from the community is a React example of making a simple request using the OAuth to this endpoint as I only have someone more junior in React available to me. Thanks in advance!

Thanks @alexfilipovici , any thoughts on the "iss" value?

Pandaredcap
Advocate I
Advocate I

Hello,

 

2 Step are required to Set up the Auth on this Http Connector (Any users  in my tenant) : 

 

Step 1 : 

  • Create an app Service , in the Api Permission Allow the Power Automate as Signed User (Admin Consent require)
  • Create a Secret for the app Service

Pandaredcap_0-1698124601603.png

 

Step 2 : 

  • Create your flow with the "when a HTTP Request Is Receive" to generate the URL to post
  • create another flow with http request with Azure AD auth to post on the previous url generated, Use the App Service to Auth

Pandaredcap_1-1698124913508.png

Or Use "Invoke Http with Aure AD"

Add only add the end of Base Ressource URL those Parameters when created the connection:

&sp=%2Ftriggers%2Fmanual%2Frun

Pandaredcap_2-1698124998124.png

 

All credit goes to  Yash Agarwal for this one : 

Set up Connection for "Any Users on my Tenant" for the connector "When a Http Req is Received"

https://www.bythedevs.com/post/securing-when-an-http-request-is-received-trigger-in-power-automate-p...

Set up Connection for "Specific Usesr in my tenant" for the connector "When a Http Req is Received"

https://www.bythedevs.com/post/securing-when-an-http-request-is-received-trigger-in-power-automate-p...

 

If this Post help you to resolve your Issue, Please make a thumps up, mark it as a solution ! 

 

d_aleshire
Employee
Employee

@surfingtiger - The is an easier method than using an app service that might be useful.

 

If the flow you are trying to trigger is contained in a solution you can use the Flows -> Call Child Flow to trigger the HTTP Request using the authenticated user running the flow. 

The child flow in the image named "Test - Child ..." is triggered when an HTTP Request is received. Simply add the child flow action, select the flow, and pass in the parameters.

 

d_aleshire_0-1699398334097.png

 

brownman311
Advocate I
Advocate I

For anyone looking to authenticate via Postman, please see this video by Amreek Singh.

https://youtu.be/U1qykshQxRY

 

You will need to First get the access token:

brownman311_0-1710266455433.png

and then use that in your HTTP request:

brownman311_1-1710266507829.png

 

 

vinayanlive
New Member

can you please explain how we can add the auth url to an outlook actionable item action.Http, I am using "any user in, my tenant" and I am getting "the remote endpoint returned an error (HTTP 401")".

POST url I added in the adaptive card is from "when an HTTP request received." 

@vinayanlive I'm looking into this also.

Adaptative cards needs to call the actionURL this would be the "When a HTTP request is received"

If anyone know please help 🙂

@JimmyWork  Anything found? 

inzil2k
Advocate II
Advocate II

Did the authentication option disappear all of a sudden when using this trigger? I tried creating a new flow to test this option but it is not there anymore.

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