1

I am creating an Azure AD Single tenant Application using asp.net to Provisioning SharePoint site collections. I am able to create site collections as the APP is giving full rights on SharePoint in Azure portal. But when i am trying to access the specific site collection (https://tenant.sharepoint.com/sites/sampletestsite/), getting the Error

 Failed to refresh token 

Below is the code i am using to get the access token from the azure and creating the SharePoint context.

public ClientContext GetSharePointContext(string SiteUrl)
{
    ClientContext spContext = null;
    try
    {

        Task<string> result = Task.Run<string>(async () => await GetAccessToken(SiteUrl));
        result.Wait();
        if (result != null)
            spContext = TokenHelper.GetClientContextWithAccessToken(SiteUrl, result.Result);

    }
    catch (System.Exception ex)
    {

    }
    return spContext;
}

public async Task<string> GetAccessToken(string siteurl)
{
    AuthenticationResult authenticationResult=null;
    try
    {
        string signedInUserID = ClaimsPrincipal.Current.FindFirst(ClaimTypes.NameIdentifier).Value;
        string tenantID = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/tenantid").Value;
        string userObjectID = ClaimsPrincipal.Current.FindFirst("http://schemas.microsoft.com/identity/claims/objectidentifier").Value;
        // get a token for the Graph without triggering any user interaction (from the cache, via multi-resource refresh token, etc)
        ClientCredential clientcred = new ClientCredential(clientId, appKey);
        // initialize AuthenticationContext with the token cache of the currently signed in user, as kept in the app's database
        AuthenticationContext authenticationContext = new AuthenticationContext(aadInstance + tenantID, new ADALTokenCache(signedInUserID));
        authenticationResult = await authenticationContext.AcquireTokenSilentAsync(siteurl, clientcred, new UserIdentifier(userObjectID, UserIdentifierType.UniqueId));
        return authenticationResult.AccessToken;
    }
    catch (System.Exception ex)
    {

        return authenticationResult.AccessToken;
    }
}

First i am passing the https://tenant-admin.sharepoint.com/ url and getting the access token and creating the SharePoint context and creating the site collection,which is working fine. Now again i am passing the site collection url https://tenenat.sharepoint.com/sites/sampletestsite/ and getting the Failed to refresh token Error. Can anyone help me on this.

0

AcquireTokenSilentAsync try to get token silently but may fail after 90 days of login, in that case you need to call AcquireTokenAsync Refer below code

try
{
   authenticationResult = authenticationContext.AcquireTokenSilentAsync(_resource, _clientId).Result;
}
  catch (AggregateException exception) when (exception.InnerException is AdalSilentTokenAcquisitionException)
{
  authenticationResult = authenticationContext.AcquireTokenAsync(_resource,
  _clientId, new Uri(_returnUri), _platformParameter).Result;
}

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.