The redirect URI specified in the request does not match the redirect URIs configured for the application

Question

I am creating an app using Python (Flask) and followed this tutorial: https://learn.microsoft.com/en-us/azure/active-directory/develop/web-app-quickstart?pivots=devlang-python

When I run I get the following error: AADSTS50011: The redirect URI 'http://127.0.0.1:5000/getAToken' specified in the request does not match the redirect URIs configured for the application

The redirect URI that I specified in Azure per the tutorials instructions is http://localhost:5000/getAToken

The app is running locally on http://127.0.0.1:5000

So the URIs absolutely match. Why am I still getting this error?

Answer 1

Hi @Jack Kelly ,

It sounds like you are accessing the the application using the http://127.0.0.1:5000 in the browser, so your redirect URI is getting changed to http://127.0.0.1:5000/getAToken . Since this entry does not exist in your Redirect URI configuration in the Azure AD App Registration, you are receiving the reply URL mismatch error.

There are a few things that should work to resolve this:

1) Access the application using http://localhost:5000

2) Force the host to be localhost at the application startup.

 if __name__ == "__main__":  
     app.run(host="localhost")  

3) Change the reply url configured In the authentication tab of the app registration to http://127.0.0.1:5000/getAToken

If these solutions do not work, feel free to reach out to me over email and I will gladly help troubleshoot. There was a thread here where a user was having a similar issue with the absolute URL in the Python sample.

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