cancel
Showing results for 
Search instead for 
Did you mean: 
Reply
Syndicate_Admin
Administrator
Administrator

Custom Connector OAuth2.0 with grant type client credential

Hi PowerApps Community,

 

I am currently facing an issue with the custom connector creation.

Due to security requirement, I can only use OAuth2.0.

However, I have only the Token url. There is no Authorization url or Refresh url provided.

When will Microsoft be able to allow grant type selection (e.g. grant type=client credentials)

elmz_0-1648709674365.png

 

https://docs.microsoft.com/en-us/connectors/custom-connectors/connection-parameters

Thanks!

13 REPLIES 13
joelzehring
Advocate IV
Advocate IV

Thanks for posting this. I'm facing the same issue. Custom connectors seem like a great idea, but there are so many caveats that have prevented me from using this feature in multiple usecases!

Syndicate_Admin
Administrator
Administrator

Hopefully they will implement the grant type client credentials feature soon @Syndicate_Admin 

JoshuaKooistra
Frequent Visitor

Thank you for the link that shows that Microsoft doesn't support this. I've spent many hours now running in circles trying to find any way to get this to work. Whenever anything looked hopeful it swiftly hit a dead end.

 

Where do we go to add our voice to those wanting to see this implemented?

jackmarrows
New Member

I was able to get around this limitation with some customer code (4. Code section when creating your connector).

May be slightly different to yours, I was authenticating against AWS Cognito but should be similar.

public class Script : ScriptBase
{
    public override async Task<HttpResponseMessage> ExecuteAsync()
    {
        string url = @"<Your Token URL>/oauth2/token";
        string body = "grant_type=<Your Grant Types URL Encoded>";
        var data = Encoding.Default.GetBytes(body);

        HttpRequestMessage authTokenRequest = new HttpRequestMessage(new HttpMethod("POST"), new Uri(url));
        authTokenRequest.Content = new StringContent(body, new UTF8Encoding(), "application/x-www-form-urlencoded");
        authTokenRequest.Headers.Add("Authorization", "Basic <Your Client Credentials>");
        HttpResponseMessage authTokenResponseresponse = await this.Context.SendAsync(authTokenRequest, this.CancellationToken).ConfigureAwait(continueOnCapturedContext: false);       
        var responseString = await authTokenResponseresponse.Content.ReadAsStringAsync();
        Dictionary<string, string> authTokenData = JsonConvert.DeserializeObject<Dictionary<string, string>>(responseString);
        this.Context.Logger.LogDebug(0, authTokenData["token_type"], null);
        this.Context.Request.Headers.Add("Authorization",Convert.ToString(authTokenData["token_type"]) + " " + Convert.ToString(authTokenData["access_token"]));

        HttpResponseMessage response = await this.Context.SendAsync(this.Context.Request, this.CancellationToken).ConfigureAwait(continueOnCapturedContext: false);       
        return response;
    }
}

 

JoshuaKooistra
Frequent Visitor

I did get around it eventually as well.
The method I used was to leave out the custom connector all together. I used the HTTP connector/action in the flow to perform the authorization POST.

It required storing the username and password in variables then using the compose action with the base64() expression to encode it for the header, and after the Post it needed a Parse JSON action to retrieve the authorization token to use in other HTTP actions.
It's not ideal, but it works for now.

I also ran into an API that uses the password grant type for oauth2.0. You can manually edit the swagger code in the custom connector and get successful test connection for this grant type, but you can't save the connector like that. Using the HTTP action appears to be the only viable way for that connection type as well, but there are security concerns with that.

systema365
New Member

I'm wondering if anyone has tried setting up a API proxy via Azure API Management to get around this?

 

This way too you could have a central repository for all API's and authenticate with your Azure AD.  Just a thought - I'm thinking of doing this approach as well, but wanted to see if anyone has already tried it.


@JoshuaKooistra wrote:

Thank you for the link that shows that Microsoft doesn't support this. I've spent many hours now running in circles trying to find any way to get this to work. Whenever anything looked hopeful it swiftly hit a dead end.

 

Where do we go to add our voice to those wanting to see this implemented?


I just added a vote here https://ideas.powerautomate.com/d365community/idea/c4437fa0-bef7-406a-b42f-309b1bdcc782 ... it's only been open for 3 years so maybe there's still hope 😉

@JoshuaKooistra 
Could you share how you did it?
The API I am trying to consume requires authorization in the header and I set it up like this

anadam1124_0-1696205308778.png

I verified that the variable Authorization is in the format of "Basic <Client_ID:Client_Secret>(Base64 encoded)", but I still get the error of "error":"invalid_request","error_description":"Request is missing grant type."

JoshuaKooistra
Frequent Visitor

It will vary a bit depending on the API requirements I think. In general I initialize three string variables.

The base url as I will generally use this more than once

The accessID/APIkey

The secret.

JoshuaKooistra_0-1696206271655.png

Then I base64 encode the id an secret using a compose step with base64 and concat expressions. This is the step I think you're missing.

base64(concat(variables('AccessID'),':',variables('Secret')))
JoshuaKooistra_3-1696206721024.png

Then I do the POST. The options for this will be dependent on what the API requires.

JoshuaKooistra_4-1696206760054.png

From there you need to run the flow and get the output so you can set up a parse json step and get the access_token, passing that into your GET/POST requests.

 

@JoshuaKooistra 
Thank you very much for your information.
I set it up as you advised, but I still get the same error saying that "Request is missing grant type." It is probably something specific to the API. Something I cannot understand is that with Postman it works without any error, but not with Power Automate flow.

@JoshuaKooistra 
It worked !!!

anadam1124_0-1696240011169.png
Thank you again.

 

JoshuaKooistra
Frequent Visitor

That's great! It should make it that much easier to set up the next time.

Syndicate_Admin
Administrator
Administrator

Dear all, HTTP block requires a premium license.

Is it possible to create a custom connector Oauth 2.0 that allow an initial access token creation by a grant type client_credentials?

 

Thank you,

Riccardo

Helpful resources

Announcements

Exclusive LIVE Community Event: Power Apps Copilot Coffee Chat with Copilot Studio Product Team

It's time for the SECOND Power Apps Copilot Coffee Chat featuring the Copilot Studio product team, which will be held LIVE on April 3, 2024 at 9:30 AM Pacific Daylight Time (PDT).     This is an incredible opportunity to connect with members of the Copilot Studio product team and ask them anything about Copilot Studio. We'll share our special guests with you shortly--but we want to encourage to mark your calendars now because you will not want to miss the conversation.   This live event will give you the unique opportunity to learn more about Copilot Studio plans, where we’ll focus, and get insight into upcoming features. We’re looking forward to hearing from the community, so bring your questions!   TO GET ACCESS TO THIS EXCLUSIVE AMA: Kudo this post to reserve your spot! Reserve your spot now by kudoing this post.  Reservations will be prioritized on when your kudo for the post comes through, so don't wait! Click that "kudo button" today.   Invitations will be sent on April 2nd.Users posting Kudos after April 2nd at 9AM PDT may not receive an invitation but will be able to view the session online after conclusion of the event. Give your "kudo" today and mark your calendars for April 3, 2024 at 9:30 AM PDT and join us for an engaging and informative session!

Tuesday Tip: Unlocking Community Achievements and Earning Badges

TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users.   With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips!     THIS WEEK'S TIP: Unlocking Achievements and Earning BadgesAcross the Communities, you'll see badges on users profile that recognize and reward their engagement and contributions. These badges each signify a different achievement--and all of those achievements are available to any Community member! If you're a seasoned pro or just getting started, you too can earn badges for the great work you do. Check out some details on Community badges below--and find out more in the detailed link at the end of the article!       A Diverse Range of Badges to Collect The badges you can earn in the Community cover a wide array of activities, including: Kudos Received: Acknowledges the number of times a user’s post has been appreciated with a “Kudo.”Kudos Given: Highlights the user’s generosity in recognizing others’ contributions.Topics Created: Tracks the number of discussions initiated by a user.Solutions Provided: Celebrates the instances where a user’s response is marked as the correct solution.Reply: Counts the number of times a user has engaged with community discussions.Blog Contributor: Honors those who contribute valuable content and are invited to write for the community blog.       A Community Evolving Together Badges are not only a great way to recognize outstanding contributions of our amazing Community members--they are also a way to continue fostering a collaborative and supportive environment. As you continue to share your knowledge and assist each other these badges serve as a visual representation of your valuable contributions.   Find out more about badges in these Community Support pages in each Community: All About Community Badges - Power Apps CommunityAll About Community Badges - Power Automate CommunityAll About Community Badges - Copilot Studio CommunityAll About Community Badges - Power Pages Community

Tuesday Tips: Powering Up Your Community Profile

TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users.   With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips!   This Week's Tip: Power Up Your Profile!  🚀 It's where every Community member gets their start, and it's essential that you keep it updated! Your Community User Profile is how you're able to get messages, post solutions, ask questions--and as you rank up, it's where your badges will appear and how you'll be known when you start blogging in the Community Blog. Your Community User Profile is how the Community knows you--so it's essential that it works the way you need it to! From changing your username to updating contact information, this Knowledge Base Article is your best resource for powering up your profile.     Password Puzzles? No Problem! Find out how to sync your Azure AD password with your community account, ensuring a seamless sign-in. No separate passwords to remember! Job Jumps & Email Swaps Changed jobs? Got a new email? Fear not! You'll find out how to link your shiny new email to your existing community account, keeping your contributions and connections intact. Username Uncertainties Unraveled Picking the perfect username is crucial--and sometimes the original choice you signed up with doesn't fit as well as you may have thought. There's a quick way to request an update here--but remember, your username is your community identity, so choose wisely. "Need Admin Approval" Warning Window? If you see this error message while using the community, don't worry. A simple process will help you get where you need to go. If you still need assistance, find out how to contact your Community Support team. Whatever you're looking for, when it comes to your profile, the Community Account Support Knowledge Base article is your treasure trove of tips as you navigate the nuances of your Community Profile. It’s the ultimate resource for keeping your digital identity in tip-top shape while engaging with the Power Platform Community. So, dive in and power up your profile today!  💪🚀   Community Account Support | Power Apps Community Account Support | Power AutomateCommunity Account Support | Copilot Studio  Community Account Support | Power Pages

Super User of the Month | Chris Piasecki

In our 2nd installment of this new ongoing feature in the Community, we're thrilled to announce that Chris Piasecki is our Super User of the Month for March 2024. If you've been in the Community for a while, we're sure you've seen a comment or marked one of Chris' helpful tips as a solution--he's been a Super User for SEVEN consecutive seasons!   Since authoring his first reply in April 2020 to his most recent achievement organizing the Canadian Power Platform Summit this month, Chris has helped countless Community members with his insights and expertise. In addition to being a Super User, Chris is also a User Group leader, Microsoft MVP, and a featured speaker at the Microsoft Power Platform Conference. His contributions to the new SUIT program, along with his joyous personality and willingness to jump in and help so many members has made Chris a fixture in the Power Platform Community.   When Chris isn't authoring solutions or organizing events, he's actively leading Piasecki Consulting, specializing in solution architecture, integration, DevOps, and more--helping clients discover how to strategize and implement Microsoft's technology platforms. We are grateful for Chris' insightful help in the Community and look forward to even more amazing milestones as he continues to assist so many with his great tips, solutions--always with a smile and a great sense of humor.You can find Chris in the Community and on LinkedIn. Thanks for being such a SUPER user, Chris! 💪 🌠  

Tuesday Tips: Community Ranks and YOU

TUESDAY TIPS are our way of communicating helpful things we've learned or shared that have helped members of the Community. Whether you're just getting started or you're a seasoned pro, Tuesday Tips will help you know where to go, what to look for, and navigate your way through the ever-growing--and ever-changing--world of the Power Platform Community! We cover basics about the Community, provide a few "insider tips" to make your experience even better, and share best practices gleaned from our most active community members and Super Users.   With so many new Community members joining us each week, we'll also review a few of our "best practices" so you know just "how" the Community works, so make sure to watch the News & Announcements each week for the latest and greatest Tuesday Tips!This Week: Community Ranks--Moving from "Member" to "Community Champion"   Have you ever wondered how your fellow community members ascend the ranks within our community? What sets apart an Advocate from a Helper, or a Solution Sage from a Community Champion? In today’s #TuesdayTip, we’re unveiling the secrets and sharing tips to help YOU elevate your ranking—and why it matters to our vibrant communities. Community ranks serve as a window into a member’s role and activity. They celebrate your accomplishments and reveal whether someone has been actively contributing and assisting others. For instance, a Super User is someone who has been exceptionally helpful and engaged. Some ranks even come with special permissions, especially those related to community management. As you actively participate—whether by creating new topics, providing solutions, or earning kudos—your rank can climb. Each time you achieve a new rank, you’ll receive an email notification. Look out for the icon and rank name displayed next to your username—it’s a badge of honor! Fun fact: Your Community Engagement Team keeps an eye on these ranks, recognizing the most passionate and active community members. So shine brightly with valuable content, and you might just earn well-deserved recognition! Where can you see someone’s rank? When viewing a post, you’ll find a member’s rank to the left of their name.Click on a username to explore their profile, where their rank is prominently displayed. What about the ranks themselves? New members start as New Members, progressing to Regular Visitors, and then Frequent Visitors.Beyond that, we have a categorized system: Kudo Ranks: Earned through kudos (teal icons).Post Ranks: Based on your posts (purple icons).Solution Ranks: Reflecting your solutions (green icons).Combo Ranks: These orange icons combine kudos, solutions, and posts. The top ranks have unique names, making your journey even more exciting! So dive in, collect those kudos, share solutions, and let’s see how high you can rank!  🌟 🚀   Check out the Using the Community boards in each of the communities for more helpful information!  Power Apps, Power Automate, Copilot Studio & Power Pages

Find Out What Makes Super Users So Super

We know many of you visit the Power Platform Communities to ask questions and receive answers. But do you know that many of our best answers and solutions come from Community members who are super active, helping anyone who needs a little help getting unstuck with Business Applications products? We call these dedicated Community members Super Users because they are the real heroes in the Community, willing to jump in whenever they can to help! Maybe you've encountered them yourself and they've solved some of your biggest questions. Have you ever wondered, "Why?"We interviewed several of our Super Users to understand what drives them to help in the Community--and discover the difference it has made in their lives as well! Take a look in our gallery today: What Motivates a Super User? - Power Platform Community (microsoft.com)

Top Kudoed Authors
Users online (6,448)