Error while creating DiscoveryClient object

Question

Hi,
i have an issue creating DiscoveryClient object. I tried to solve this by granting all permissions and THEN generating the secret but i still the same Exception.
public string discoveryId = "https://api.office.com/discovery/";
public string cmmAth = "https://login.windows.net/Common";
public async Task<OutlookServicesClient> EnsureClientCreatedAsync()
try
string authority = cmmAth;
_authenticationContext = new AuthenticationContext(authority);
DiscoveryClient discoCli = new DiscoveryClient(async () => await GetTokenHelperAsync(_authenticationContext, discoveryId));
CapabilityDiscoveryResult discoResult = await discoCli.DiscoverCapabilityAsync("Calendar");
var outlookCli = new OutlookServicesClient(discoResult.ServiceEndpointUri, async () => await GetTokenHelperAsync(_authenticationContext, discoResult.ServiceResourceId));
return outlookCli;
catch (AdalException e)
MessageBox.Show(e.ToString());
if(_authenticationContext != null && _authenticationContext.TokenCache != null){
_authenticationContext.TokenCache.Clear();
return null;
public async Task<string> GetTokenHelperAsync(AuthenticationContext context, string resourceId)
string accessToken = null;
AuthenticationResult result = null;
ClientCredential cliCred = new ClientCredential("xxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxx", "yyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy=");
result = await context.AcquireTokenAsync(resourceId, cliCred);
accessToken = result.AccessToken;
return accessToken;
and my AdalException is
AADSTS70001: Application with identifier xxxxx-xxxx-xxxx-xxx-xxxxx was not found in the directory api.office.com
thx for any Help
Maciej 

Answer 1

Hi,
What the application type did you develop with: Web Application or Windows Client Application?
To use Office 365 API in ASP.NET Web Application, I suggest you referencing the sample project
O365-ASPNETMVC-Start.
internal static async Task<OutlookServicesClient> EnsureOutlookServicesClientCreatedAsync(string capabilityName)
var signInUserId = ClaimsPrincipal.Current.FindFirst(ClaimTypes.NameIdentifier).Value;
var userObjectId = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;
AuthenticationContext authContext = new AuthenticationContext(SettingsHelper.Authority, new ADALTokenCache(signInUserId));
try
DiscoveryClient discClient = new DiscoveryClient(SettingsHelper.DiscoveryServiceEndpointUri,
async () =>
var authResult = await authContext.AcquireTokenSilentAsync(SettingsHelper.DiscoveryServiceResourceId,
new ClientCredential(SettingsHelper.ClientId,
SettingsHelper.AppKey),
new UserIdentifier(userObjectId,
UserIdentifierType.UniqueId));
return authResult.AccessToken;
var dcr = await discClient.DiscoverCapabilityAsync(capabilityName);
return new OutlookServicesClient(dcr.ServiceEndpointUri,
async () =>
var authResult = await authContext.AcquireTokenSilentAsync(dcr.ServiceResourceId,
new ClientCredential(SettingsHelper.ClientId,
SettingsHelper.AppKey),
new UserIdentifier(userObjectId,
UserIdentifierType.UniqueId));
return authResult.AccessToken;
catch (AdalException exception)
//Handle token acquisition failure
if (exception.ErrorCode == AdalError.FailedToAcquireTokenSilently)
authContext.TokenCache.Clear();
throw exception;
return null;
For Windows client application, you could get the token by using the code as following:
private async void GetToken()
string authority = "https://login.windows.net/Common";
AuthenticationContext authenticationContext = new AuthenticationContext(authority);
string discoveryResourceId = "https://api.office.com/discovery/";
String clientId = "{Client ID}";
Uri redirectUri = new Uri("http://localhost/{return GUID}");
var token = authenticationContext.AcquireToken(discoveryResourceId, clientId, redirectUri);
Regards,
Jeffrey
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