Adding authentication to messaging extension and testing locally. Unable to access openUrl hosted on ngrok

Question

Following the steps here to add authentication to a messaging extension

https://learn.microsoft.com/en-us/microsoftteams/platform/messaging-extensions/how-to/add-authentication

Running 2 static pages:
https://.ngrok.io/startAuth.html
https://.ngrok.io/endAuth

LoginCard:

return  
    {  
      "composeExtension":{  
        "type":"auth",  
        "suggestedActions":{  
          "actions":[  
            {  
              "type": "openUrl",  
              "value": "https://*.ngrok.io/startAuth.html",  
              "title": "Sign in to this app"  
            }  
          ]  
        }  
      }  
    }  

Using card to access first static page to kick off authentication returns error:
After clicking login button:
Something went wrong, please try again.

The *.ngrok.io domain is already added to the validDomain list

Answer 1

Hi @Matthew Cohen ,

As we are mainly responsible for general issue of Microsoft Teams, your question which is involved in development is not in our scope.

You could post a new case in Teams Developer forum to get the most qualified pool of respondents, and other partners who read the forums regularly can either share their knowledge or learn from your interaction.

Thanks for your understanding!

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Answer 2

Can we have a discussion on call? Please write us at microsoftteamsdev@microsoft.com.

Answer 3

@MathewCohen-5316 : Any update or any doubts regarding authentication?