Graph API – ResourceNotFound when creating a user – Asp.net

Ive been trying to do this for a couple of days now and ive double checked everything against examples and tried searching my error response but im not able to come up with anything.

Ive succesfully added graph api calls to my appplication already, when I do a GET on the /users endpoint it returns my AD users just fine, the code below is what I am doing to try and create the user but every time i get ResourceNotFound response.

It may we worth noting that at first I was getting an error message where it wasnt stating the resource it couldnt find, but now the error message is showing ‘Resource ‘User_’ does not exist…’

The GUID changes every time suggesting that it is creating that object and then trying to do something with it but then failing on the API somewhere.

Create User Function –

Public Function CreateUser(user As User) As String
            Dim app As IConfidentialClientApplication = MsalAppBuilder.BuildConfidentialClientApplication(ClaimsPrincipal.Current)
    
            Dim accountId = ClaimsPrincipal.Current.GetMsalAccountId()            
            Dim account = app.GetAccountAsync(accountId).Result           
    
            Dim result As AuthenticationResult
            Dim scopes As String() = {"https://graph.microsoft.com/.default"}
    
            Try
                result = app.AcquireTokenSilent(scopes, account).ExecuteAsync().Result
    
            Catch msalEx As MsalUiRequiredException
                Return msalEx.Message
            Catch ex As Exception
                result = app.AcquireTokenForClient(scopes).ExecuteAsync().Result
            End Try
    
    
            Dim client = New HttpClient()
            Dim request As New HttpRequestMessage(HttpMethod.Post, "https://graph.microsoft.com/v1.0/users")
            request.Headers.Authorization = New AuthenticationHeaderValue("Bearer", result.AccessToken)
    
            Dim json = JsonConvert.SerializeObject(user)
            request.Content = New StringContent(json, Encoding.UTF8, "application/json")
    
            Dim response = client.SendAsync(request).Result
    
            If response.Content IsNot Nothing Then
                Dim responseString = response.Content.ReadAsStringAsync().Result
                Return responseString
            End If
            Return ""
        End Function

Something else I noticed is that the app never contains any users so the scope only token is always called.