Error 401 authenticating with Project Online and CSOM - csom

Question

I get error 401 (or 403) when trying to connect to Project Online with CSOM in a console app. (This is not on-premise. It is Microsoft Project Online 2013.) Here is the code.
ProjectContext projContext = new ProjectContext(pwaPath);
projContext.Credentials = new NetworkCredential("myUserID", "mypwd", "xxx.onmicrosoft.com");
projContext.ExecutingWebRequest += new EventHandler<WebRequestEventArgs>(projContext_ExecutingWebRequest);
projContext.Load(projContext.Projects);
projContext.ExecuteQuery();
**// Error 401 Unauthorized**
static void projContext_ExecutingWebRequest(object sender, WebRequestEventArgs e)
{
e.WebRequestExecutor.WebRequest.Headers.Add("X-FORMS_BASED_AUTH_ACCEPTED", "f");
}
And another try, without ExecutingWebRequest:
ProjectContext projContext = new ProjectContext(pwaPath);
projContext.Credentials = new NetworkCredential("myUserID", "mypwd", "xxx.onmicrosoft.com");
projContext.Load(projContext.Projects);
projContext.ExecuteQuery();
**// Error 403 Forbidden**
Q1: Are there any problems with the code?
Q2: Is there a setting in Project Online that I'm missing?

Answer 1

You can use:
new SharePointOnlineCredentials(username, secpassword);
instead of
new NetworkCredential("admin#myserver.onmicrosoft.com", "password");
First: Install required Client SDK
SharePoint Client SDK :
http://www.microsoft.com/en-au/download/details.aspx?id=35585
Project 2013 SDK:
http://www.microsoft.com/en-au/download/details.aspx?id=30435
Second: add the reference to your project
Microsoft.SharePoint.Client.dll
Microsoft.SharePoint.Client.Runtime.dll
Microsoft.ProjectServer.Client.dll
You can find the dlls in %programfiles%\Common Files\microsoft shared\Web Server Extensions\15\ISAPI
and %programfiles(x86)%\Microsoft SDKs\Project 2013\REDIST
Here is sample code:
using System;
using System.Security;
using Microsoft.ProjectServer.Client;
using Microsoft.SharePoint.Client;
public class Program
{
private const string pwaPath = "https://[yoursitehere].sharepoint.com/sites/pwa";
private const string username ="[username]";
private const string password = "[password]";
static void Main(string[] args)
{
SecureString secpassword = new SecureString();
foreach (char c in password.ToCharArray()) secpassword.AppendChar(c);
ProjectContext pc = new ProjectContext(pwaPath);
pc.Credentials = new SharePointOnlineCredentials(username, secpassword);
//now you can query
pc.Load(pc.Projects);
pc.ExecuteQuery();
foreach(var p in pc.Projects)
{
Console.WriteLine(p.Name);
}
//Or Create a new project
ProjectCreationInformation newProj = new ProjectCreationInformation() {
Id = Guid.NewGuid(),
Name = "[your project name]",
Start = DateTime.Today.Date
};
PublishedProject newPublishedProj = pc.Projects.Add(newProj);
QueueJob qJob = pc.Projects.Update();
JobState jobState = pc.WaitForQueue(qJob,/*timeout for wait*/ 10);
}
}
I already answered this question in other question
How to authenticate to Project Online PSI services?