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I'm trying to use Application token to create a meeting on behalf of a user and is getting error Bad Request - Request payload cannot be null. I'm able to generate access token, get User object.
Do I need to Configure application access policy (I have no idea where to find this on Azure portal)? Your help is greatly appreciated.
Json payload
"{\"subject\":\"Test Online Meeting for Team 2025 a\",\"startDateTime\":\"2025-03-01T10:00:00Z\",\"endDateTime\":\"2025-03-01T11:00:00Z\",\"accessLevel\":\"everyone\",\"entryExitAnnouncement\":true,\"body\":{\"content\":\"\"},\"participants\":{\"anizier\":{\"identity\":{\"user\":{\"id\":\"aa005b40-9bcb-465d-ac17-56b50ee99e3e\"}}}}}"
Create meeting code
try
{
string user_id = "aa005b40-9bcb-465d-ac17-56b50ee99e3e";
using (HttpClient httpClient = new HttpClient())
{
httpClient.BaseAddress = new Uri(".0/me/onlineMeetings");
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
httpClient.DefaultRequestHeaders.Add("authorization", "Bearer " + accessToken + "");
var content = new StringContent(jsonobj.ToString(), System.Text.Encoding.UTF8, "application/json");
servicerequest = httpClient.PostAsync(".0/{user_id}/onlineMeetings", content).Result;
string response = servicerequest.Content.ReadAsStringAsync().Result;
meetingObj = JsonConvert.DeserializeObject<TeamsMeetingEventObj>(response);
String OnlineTeamLink = meetingObj.join_WebUrl.ToString();
}
}
catch (Exception ex)
{
meetingObj.general_message = "Exception: " + ex.Message;
}
This is the API Permission
Decode of Access Token
{
"typ": "JWT",
"nonce": "O0k-Dr8iF7CHKVRRoieNaaWlzrR1H3Q7MkJ6_zDjsYw",
"alg": "RS256",
"x5t": "imi0Y2z0dYKxBttAqK_Tt5hYBTk",
"kid": "imi0Y2z0dYKxBttAqK_Tt5hYBTk"
}.{
"aud": ";,
"iss": ";,
"iat": 1739862965,
"nbf": 1739862965,
"exp": 1739866865,
"aio": "k2RgYCj+P1Fzzf+uAvP7rUvv/Nxxxxxx",
"app_displayname": "Teams Integration",
"appid": "2faa523d-93e5-4f0e-b129-247ae7xxxxxx",
"appidacr": "1",
"idp": "/",
"idtyp": "app",
"oid": "11dc9a92-88a3-46c3-82c6-58369axxxxxx",
"rh": "1.AWEBXYUR1LLgC0iT18umDPso7gMAAAAAAAAAwAAAAAAAAABiAQBhAQ.",
"roles": [
"OnlineMeetings.ReadWrite.All",
"Application.ReadWrite.OwnedBy",
"Calendars.ReadWrite",
"Application.Read.All",
"Reports.Read.All"
],
"sub": "11dc9a92-88a3-46c3-82c6-58369axxxxxx",
"tenant_region_scope": "NA",
"tid": "d411855d-e0b2-480b-93d7-cba60cxxxxxx",
"uti": "yz1WwGN5XEqtGSUbtvXZAA",
"ver": "1.0",
"wids": [
"0997a1d0-0d1d-4acb-b408-d5ca73xxxxxx"
],
"xms_idrel": "6 7",
"xms_tcdt": 1738391941
}.[Signature]
This is the error
{BadRequest} - {\"error\":{\"code\":\"General\",\"message\":\"Request payload cannot be null.\",\"innerError\":{\"request-id\":\"d2bd44f7-46c2-47b3-8239-a159264b0a0f\",\"date\":\"2025-02-19T09:09:26\",\"client-request-id\":\"d2bd44f7-46c2-47b3-8239-a159264b0a0f\"}}}"
{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Transfer-Encoding: chunked
Strict-Transport-Security: max-age=31536000
request-id: f3af64c0-dddf-4055-962f-53a9a821b990
client-request-id: f3af64c0-dddf-4055-962f-53a9a821b990
x-ms-ags-diagnostic: {"ServerInfo":{"DataCenter":"West US 3","Slice":"E","Ring":"2","ScaleUnit":"000","RoleInstance":"PH1PEPF00011630"}}
scenario-id: 67df8b07-7824-4a72-8c02-68a59e482571
Date: Wed, 19 Feb 2025 16:25:25 GMT
Content-Type: application/json
}}
I'm trying to use Application token to create a meeting on behalf of a user and is getting error Bad Request - Request payload cannot be null. I'm able to generate access token, get User object.
Do I need to Configure application access policy (I have no idea where to find this on Azure portal)? Your help is greatly appreciated.
Json payload
"{\"subject\":\"Test Online Meeting for Team 2025 a\",\"startDateTime\":\"2025-03-01T10:00:00Z\",\"endDateTime\":\"2025-03-01T11:00:00Z\",\"accessLevel\":\"everyone\",\"entryExitAnnouncement\":true,\"body\":{\"content\":\"\"},\"participants\":{\"anizier\":{\"identity\":{\"user\":{\"id\":\"aa005b40-9bcb-465d-ac17-56b50ee99e3e\"}}}}}"
Create meeting code
try
{
string user_id = "aa005b40-9bcb-465d-ac17-56b50ee99e3e";
using (HttpClient httpClient = new HttpClient())
{
httpClient.BaseAddress = new Uri("https://graph.microsoft/v1.0/me/onlineMeetings");
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
httpClient.DefaultRequestHeaders.Add("authorization", "Bearer " + accessToken + "");
var content = new StringContent(jsonobj.ToString(), System.Text.Encoding.UTF8, "application/json");
servicerequest = httpClient.PostAsync("https://graph.microsoft/v1.0/{user_id}/onlineMeetings", content).Result;
string response = servicerequest.Content.ReadAsStringAsync().Result;
meetingObj = JsonConvert.DeserializeObject<TeamsMeetingEventObj>(response);
String OnlineTeamLink = meetingObj.join_WebUrl.ToString();
}
}
catch (Exception ex)
{
meetingObj.general_message = "Exception: " + ex.Message;
}
This is the API Permission
Decode of Access Token
{
"typ": "JWT",
"nonce": "O0k-Dr8iF7CHKVRRoieNaaWlzrR1H3Q7MkJ6_zDjsYw",
"alg": "RS256",
"x5t": "imi0Y2z0dYKxBttAqK_Tt5hYBTk",
"kid": "imi0Y2z0dYKxBttAqK_Tt5hYBTk"
}.{
"aud": "https://graph.microsoft",
"iss": "https://sts.windows/d411855d-e0b2-480b-93d7-cba60cxxxxxx",
"iat": 1739862965,
"nbf": 1739862965,
"exp": 1739866865,
"aio": "k2RgYCj+P1Fzzf+uAvP7rUvv/Nxxxxxx",
"app_displayname": "Teams Integration",
"appid": "2faa523d-93e5-4f0e-b129-247ae7xxxxxx",
"appidacr": "1",
"idp": "https://sts.windows/d411855d-e0b2-480b-93d7-cba60cxxxxxx/",
"idtyp": "app",
"oid": "11dc9a92-88a3-46c3-82c6-58369axxxxxx",
"rh": "1.AWEBXYUR1LLgC0iT18umDPso7gMAAAAAAAAAwAAAAAAAAABiAQBhAQ.",
"roles": [
"OnlineMeetings.ReadWrite.All",
"Application.ReadWrite.OwnedBy",
"Calendars.ReadWrite",
"Application.Read.All",
"Reports.Read.All"
],
"sub": "11dc9a92-88a3-46c3-82c6-58369axxxxxx",
"tenant_region_scope": "NA",
"tid": "d411855d-e0b2-480b-93d7-cba60cxxxxxx",
"uti": "yz1WwGN5XEqtGSUbtvXZAA",
"ver": "1.0",
"wids": [
"0997a1d0-0d1d-4acb-b408-d5ca73xxxxxx"
],
"xms_idrel": "6 7",
"xms_tcdt": 1738391941
}.[Signature]
This is the error
{BadRequest} - {\"error\":{\"code\":\"General\",\"message\":\"Request payload cannot be null.\",\"innerError\":{\"request-id\":\"d2bd44f7-46c2-47b3-8239-a159264b0a0f\",\"date\":\"2025-02-19T09:09:26\",\"client-request-id\":\"d2bd44f7-46c2-47b3-8239-a159264b0a0f\"}}}"
{StatusCode: 400, ReasonPhrase: 'Bad Request', Version: 1.1, Content: System.Net.Http.StreamContent, Headers:
{
Transfer-Encoding: chunked
Strict-Transport-Security: max-age=31536000
request-id: f3af64c0-dddf-4055-962f-53a9a821b990
client-request-id: f3af64c0-dddf-4055-962f-53a9a821b990
x-ms-ags-diagnostic: {"ServerInfo":{"DataCenter":"West US 3","Slice":"E","Ring":"2","ScaleUnit":"000","RoleInstance":"PH1PEPF00011630"}}
scenario-id: 67df8b07-7824-4a72-8c02-68a59e482571
Date: Wed, 19 Feb 2025 16:25:25 GMT
Content-Type: application/json
}}
- Could you pls added the complete error and screenshot of API permission blade and edit the question? – Pratik Jadhav Commented 15 hours ago
- You must need to create application access policy, Refer this MsDoc, To create application access policy MsDoc – Pratik Jadhav Commented 15 hours ago
- Could you please confirm which flow you are using? Client- Credentials flow were user-interaction is not involved or authorization-code flow where user-interaction is invoved? – Pratik Jadhav Commented 13 hours ago
- Please check below solution! – Pratik Jadhav Commented 11 hours ago
- @Pratik Jadhav I added more details of the error to the question. The Client Credentials where there is no user interaction is what I'm looking to achieve. As to create Application Access Policy, – Ph0ngvu Commented 9 hours ago
1 Answer
Reset to default 0I got the same error message, When I tried the code provided by you:
Initially, Registered Single Tenant Microsoft Entra ID Application, Added Application type OnlineMeetings.ReadWrite.All API Permission and Granted Admin Consent like below:
Note: For using Application type API permission needs to use client-credentials flow only.
Ensure to create and configure application access policy for your application.Refer this MsDoc,
Use below Powershell Script for creating and configuring application access Policy:
Install-Module -Name MicrosoftTeams -Force -AllowClobber #If not installed
Import-Module MicrosoftTeams
Connect-MicrosoftTeams
New-CsApplicationAccessPolicy -Identity Demo-policy -AppIds "<app-id>" -Description "Allow access to Teams App"
Grant-CsApplicationAccessPolicy -PolicyName Demo-policy -Global
Use below modified C# script:
using System;
using System.Net.Http;
using System.Text;
using System.Text.Json;
using System.Threading.Tasks;
using Azure.Identity;
using Microsoft.Graph;
class Program
{
private static readonly string tenantId = "<tenant-id>";
private static readonly string clientId = "<client-id>";
private static readonly string clientSecret = "<client-secret>";
private static readonly string anizerUserId = "<user-id>"; // Organizer's Azure ID
static async Task Main()
{
try
{
var graphClient = GetGraphClient();
string meetingLink = await CreateTeamsMeeting(graphClient);
if (!string.IsNullOrEmpty(meetingLink))
{
Console.WriteLine("Meeting Created Successfully!");
Console.WriteLine("Join URL: " + meetingLink);
}
else
{
Console.WriteLine("Failed to create meeting.");
}
}
catch (Exception ex)
{
Console.WriteLine($"Exception: {ex.Message}");
}
}
/// <summary>
/// Authenticates and returns a GraphServiceClient using client credentials flow.
/// </summary>
private static GraphServiceClient GetGraphClient()
{
var options = new ClientSecretCredential(tenantId, clientId, clientSecret);
return new GraphServiceClient(options);
}
/// <summary>
/// Creates a Microsoft Teams online meeting with Access Level "everyone".
/// </summary>
private static async Task<string> CreateTeamsMeeting(GraphServiceClient graphClient)
{
var httpClient = new HttpClient();
string token = await GetAccessToken();
var requestBody = new
{
subject = "Test Online Meeting for Team 2025 a",
startDateTime = "2025-03-01T10:00:00Z",
endDateTime = "2025-03-01T11:00:00Z",
accessLevel = "everyone",
participants = new
{
attendees = new[]
{
new
{
identity = new
{
user = new { id = "<object-id>" }
},
upn = "<upn>"
}
}
}
};
// Use System.Text.Json instead of Newtonsoft.Json
var jsonContent = JsonSerializer.Serialize(requestBody, new JsonSerializerOptions { PropertyNamingPolicy = JsonNamingPolicy.CamelCase });
var httpRequest = new HttpRequestMessage(HttpMethod.Post, $"https://graph.microsoft/v1.0/users/{anizerUserId}/onlineMeetings")
{
Content = new StringContent(jsonContent, Encoding.UTF8, "application/json")
};
httpRequest.Headers.Authorization = new System.Net.Http.Headers.AuthenticationHeaderValue("Bearer", token);
var response = await httpClient.SendAsync(httpRequest);
if (response.IsSuccessStatusCode)
{
var responseContent = await response.Content.ReadAsStringAsync();
using var doc = JsonDocument.Parse(responseContent);
return doc.RootElement.GetProperty("joinWebUrl").GetString();
}
else
{
Console.WriteLine($"Error: {response.StatusCode} - {await response.Content.ReadAsStringAsync()}");
return null;
}
}
/// <summary>
/// Gets an access token using Client Credentials Flow.
/// </summary>
private static async Task<string> GetAccessToken()
{
var options = new ClientSecretCredential(tenantId, clientId, clientSecret);
var tokenRequestContext = new Azure.Core.TokenRequestContext(new[] { "https://graph.microsoft/.default" });
var accessToken = await options.GetTokenAsync(tokenRequestContext);
return accessToken.Token;
}
}
Response:
Reference:
Create and Configure Application Access Policy
Create Online Meetings
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