How to enable API commands (POST, PUT, DELETE, ...) to work on App Service (auth issue)

Question

How to enable API commands (POST, PUT, DELETE, ...) to work on App Service (auth issue)

Warley Farias 20

Hi, after I searched a lot of sites and watched several videos, I am here to ask for help, for setup my Azure App Service. I implemented functions in API for GET, POST, PUT and DELETE, think like a smal CRUD, but just the GET's functions works fine. The others give me 405 - Method Not Allowed. I want to inform that is not declaration problem (API endpoint with an unsupported verb) or route, but auth problem like verified on this links: I made all recomendations but do not worked, then I have non other options. Because I believe that is just enable something and will work like in my computer.

Warley Farias 20 Reputation points

2024-02-14T18:15:34.1866667+00:00

Sorry, I forgot to put the links: https://learn.microsoft.com/en-us/azure/app-service/scenario-secure-app-authentication-app-service
AgaveJoe 30,411 Reputation points

2024-02-14T18:16:24.61+00:00

Keep in mind, we cannot see any of your code and you have not explained how your authentication works. Usually the issue is a problem with the client not sending a proper payload or the URL is incorrect. Is there anyway, you can provide basic information about your Web API application? For example, what is the client and how does the web authentication work? Maybe the following will help? https://learn.microsoft.com/en-us/entra/identity-platform/index-web-api
Warley Farias 20 Reputation points

2024-02-14T19:06:03.2633333+00:00

Hi @AgaveJoe thanks for your attention, sorry for not provide the details. See below the API configuration:

I believe that Microsoft Graph is not useful to me. But I am trying everything. When I call a simple method echo, using Postman I received a correct answer, see the image

But, when I call a PUT method I received 405 - Method not allowed, see

This happening for all POST, PUT and DELETE that I call. Just GET is working.
Warley Farias 20 Reputation points

2024-02-14T19:09:46.0933333+00:00

The API was implemented in ASP.NET API with C#, for testing I am using in this moment Postman.
AgaveJoe 30,411 Reputation points

2024-02-14T19:20:39.5833333+00:00

It looks like you have an bearer token? If so, the token is sent in the HTTP header. In PostMan, click on authorization. Then in the type dropdown select bearer. Paste the token into the token field.
Warley Farias 20 Reputation points

2024-02-14T19:42:36.1933333+00:00

I have no bearer token, sorry for basic question, can I generate this bearer token from Azure?
AgaveJoe 30,411 Reputation points

2024-02-14T20:17:10.66+00:00

I think the following tutorial is what you're looking for. Tutorial: Register a web API with the Microsoft identity platform
Bruce (SqlWork.com) 82,061 Reputation points Volunteer Moderator

2024-02-14T21:21:49.6933333+00:00
the error message has nothing to do with api permissions. the error means that the specified verb is not defined for the selected route. show your code for the echo method and its route definition.

if mvc should be something like:

[HttpPost] public EchoPostRs Echo (EchoPostRq rq)

if minapi then:

app.MapPost("/com/email/echo", ([FromBody] EchoPostRq rq) => {...});
Bryan Trach 17,837 Reputation points Microsoft Employee Moderator

2024-02-16T00:19:36.95+00:00

@Warley Farias Please let us know if the below answer was helpful by accepting it as the answer. If you have further questions or concerns, reply to this message and we will assist you further.
Warley Farias 20 Reputation points

2024-02-16T12:05:33.2733333+00:00

Hi @AgaveJoe and @Anonymous sorry for delay to answer, I am "diggesting" the information yet sent by @AgaveJoe . I made advances, but not worked yet. I promise answer if I have success or not. Thanks for your attention.
Warley Farias 20 Reputation points

2024-02-16T12:37:17.17+00:00

Hi @AgaveJoe and @Anonymous , sorry for delay to answer, I am "diggesting" the information. I made advances, but not solve my access problem yet. I promise answer if I have success or not. Thanks for attention.

Answer accepted by question author

2 additional answers

Your answer

Warley Farias 20 Reputation points

2024-02-14T18:15:34.1866667+00:00

Sorry, I forgot to put the links: https://learn.microsoft.com/en-us/azure/app-service/scenario-secure-app-authentication-app-service
AgaveJoe 30,411 Reputation points

2024-02-14T18:16:24.61+00:00

Keep in mind, we cannot see any of your code and you have not explained how your authentication works. Usually the issue is a problem with the client not sending a proper payload or the URL is incorrect. Is there anyway, you can provide basic information about your Web API application? For example, what is the client and how does the web authentication work? Maybe the following will help? https://learn.microsoft.com/en-us/entra/identity-platform/index-web-api
Warley Farias 20 Reputation points

2024-02-14T19:06:03.2633333+00:00

Hi @AgaveJoe thanks for your attention, sorry for not provide the details. See below the API configuration:

I believe that Microsoft Graph is not useful to me. But I am trying everything. When I call a simple method echo, using Postman I received a correct answer, see the image

But, when I call a PUT method I received 405 - Method not allowed, see

This happening for all POST, PUT and DELETE that I call. Just GET is working.
Warley Farias 20 Reputation points

2024-02-14T19:09:46.0933333+00:00

The API was implemented in ASP.NET API with C#, for testing I am using in this moment Postman.
AgaveJoe 30,411 Reputation points

2024-02-14T19:20:39.5833333+00:00

It looks like you have an bearer token? If so, the token is sent in the HTTP header. In PostMan, click on authorization. Then in the type dropdown select bearer. Paste the token into the token field.
Warley Farias 20 Reputation points

2024-02-14T19:42:36.1933333+00:00

I have no bearer token, sorry for basic question, can I generate this bearer token from Azure?
AgaveJoe 30,411 Reputation points

2024-02-14T20:17:10.66+00:00

I think the following tutorial is what you're looking for. Tutorial: Register a web API with the Microsoft identity platform
Bruce (SqlWork.com) 82,061 Reputation points Volunteer Moderator

2024-02-14T21:21:49.6933333+00:00

the error message has nothing to do with api permissions. the error means that the specified verb is not defined for the selected route. show your code for the echo method and its route definition.

if mvc should be something like:

[HttpPost] public EchoPostRs Echo (EchoPostRq rq)

if minapi then:

app.MapPost("/com/email/echo", ([FromBody] EchoPostRq rq) => {...});
Bryan Trach 17,837 Reputation points Microsoft Employee Moderator

2024-02-16T00:19:36.95+00:00

@Warley Farias Please let us know if the below answer was helpful by accepting it as the answer. If you have further questions or concerns, reply to this message and we will assist you further.
Warley Farias 20 Reputation points

2024-02-16T12:05:33.2733333+00:00

Hi @AgaveJoe and @Anonymous sorry for delay to answer, I am "diggesting" the information yet sent by @AgaveJoe . I made advances, but not worked yet. I promise answer if I have success or not. Thanks for your attention.
Warley Farias 20 Reputation points

2024-02-16T12:37:17.17+00:00

Hi @AgaveJoe and @Anonymous , sorry for delay to answer, I am "diggesting" the information. I made advances, but not solve my access problem yet. I promise answer if I have success or not. Thanks for attention.

Answer 1

@Warley Farias I'm glad that you were able to resolve your issue and thank you for posting your solution so that others experiencing the same thing can easily reference this! Since the Microsoft Q&A community has a policy that "The question author cannot accept their own answer. They can only accept answers by others ", I'll repost your solution in case you'd like to "Accept " the answer.

Issue: You were looking how to enable API commands on Azure App Service Solution: "HTTPS Considerations:

If you’re using HTTPS, ensure that your client-side code (e.g., Postman) also makes requests over HTTPS.
Sometimes, switching from HTTP to HTTPS in your request can resolve the issue.

This worked for me, I just put the "https://" before the calling. I hope that this help somebody in the future, I lost much time." If you have any other questions or are still running into more issues, please let me know.
Thank you again for your time and patience throughout this issue. Please remember to "Accept Answer" if any answer/reply helped, so that others in the community facing similar issues can easily find the solution.

Answer 2

Warley Farias 20

Hi everyone, after several try, I asked to Copilot that answered with this:

HTTPS Considerations:
- If you’re using HTTPS, ensure that your client-side code (e.g., Postman) also makes requests over HTTPS.
- Sometimes, switching from HTTP to HTTPS in your request can resolve the issue.

This worked for me, I just put the "https://" before the calling. I hope that this help somebody in the future, I lost mutch time.

Thanks everyone for the attention.

Answer 3

NICccc-1952 6

http://localhost:7290/api/Function

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How to enable API commands (POST, PUT, DELETE, ...) to work on App Service (auth issue)

2 additional answers

Your answer