So I have a scenario wherein the application should add users to a group on certain conditions. Also when the application starts running users should not be asked to login their microsoft id/pwd.
So I access the token I created using Graph Service Client object as follows:
    GraphServiceClient graphClient = new GraphServiceClient(
        "https://graph.microsoft.com/v1.0", 
        new DelegateAuthenticationProvider(
            async (requestMessage) =>
            {
                string clientId = "My APP ID";
                string authorityFormat = "https://login.microsoftonline.com/{0}/v2.0";
                string tenantId = "tenant GUID";
                string[] _scopes = new string[] { 
                    "https://graph.microsoft.com/User.ReadBasic.All" 
                };
                // Custom Redirect URI asigned in the Application Registration 
                // Portal in the native Application Platform
                string redirectUri = "https://localhost:4803/"; 
                string clientSecret = "App Secret";
                ConfidentialClientApplication daemonClient = new ConfidentialClientApplication(
                    clientId, 
                    String.Format(authorityFormat, tenantId), 
                    redirectUri, 
                    new ClientCredential(clientSecret), 
                    null, new TokenCache()
                );
                AuthenticationResult authResult = await daemonClient.AcquireTokenForClientAsync(_scopes);
                string token = authResult.AccessToken;
                requestMessage.Headers.Authorization = new AuthenticationHeaderValue("bearer", token);
            }
       )
    );
So I try to execute
var user = await graphClient.Me.Request().GetAsync();
I get this error:
AADSTS70011: The provided value for the input parameter 'scope' is not valid. The scope user.read is not valid.
I also tried using just User.ReadBasic as scope, but get the same error.
What am I doing wrong here?