Unable to load SharePoint online site object in recent CSOM versions

Question

Having recently upgraded CSOM, loading the site object no longer works.

This has been an issue on all versions since 16.1.8029.1200..

Anyone else come across this issue and found a way round it?

We have connected the ClientContext to a number of different sites, and using the following..

ClientContext.Load(ClientContext.Site);
ClientContext.ExecuteQuery();

Comes back with the error:

The type of data at position 1185 is different than the one expected.

Currently our work around has been to downgrade to 16.1.7918.1200, which was the last working version that allowed this to work.

Answer 1

It working fine in my environment, check the steps below:

1.Create a Console Application using Visual Studio.

2.Install package below.

Install-Package Microsoft.SharePointOnline.CSOM -Version 16.1.8029.1200

3.Modify the code below and check if it works.

using Microsoft.SharePoint.Client;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Security;
using System.Text;
using System.Threading.Tasks;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            string siteUrl = "https://tenant.sharepoint.com/sites/lz";
            var login = "[email protected]";
            var password = "xxx";

            ClientContext context = new ClientContext(siteUrl);
            var securePassword = new SecureString();
            foreach (char c in password.ToCharArray()) securePassword.AppendChar(c);
            context.Credentials = new SharePointOnlineCredentials(login, securePassword);

            var site = context.Site;
            context.Load(context.Site);
            context.ExecuteQuery();
            Console.WriteLine(site.Id);
            Console.ReadKey();
        }
    }
}