400 Bad Request Issue in Sharepoint online(through C#)

[haniffait]

Hi ,

I have issue in SharePoint authentication through C#. I downloaded the library (sharepoint.client and sharepoint.client.runtime). I send password (secure password) to sharepoint for authentication. but application throwing error 400(Bad request). but I have admin access for my credentials. Is any other special permission required from sharepoint online for develop a desktop application

[msft-github-bot]

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[bcameron1231]

It's not a permission error, because that would likely be a 401 or 403.

Can you share your code that you are using to help diagnose the problem?

[haniffait]

Hi

Please find my below code and error message.

using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Net; using System.Security; using System.Threading.Tasks; using Microsoft.SharePoint.Client; namespace CSOMOffice365 { class Program { static void Main(string[] args) { string userName = "haniffait@Plan8890.onmicrosoft.com"; Console.WriteLine("Enter your password."); string password = "**"; SecureString securePassword = new SecureString(); foreach (char ch in password.ToCharArray()) { securePassword.AppendChar(ch); } try {

            using (var clientContext = new ClientContext("https://Plan8890.sharepoint.com"))
            {
                clientContext.Credentials = new SharePointOnlineCredentials(userName, securePassword);
                Web web = clientContext.Web;
                clientContext.Load(web);
                clientContext.ExecuteQuery();    
                Console.WriteLine("Title: ");
            }
        }
        catch (Exception ex)
        {
            Console.WriteLine("Error is: " + ex.Message);
        }
    }
}

} Error Message : I got error message " mail id or password wrong" if i gave wrong password.

I got below error message while i am sending correct password Error is: The remote server returned an error: (400) Bad Request.

[bcameron1231]

Hi, so I took your code and copied it into a console app in my solution. I have no problem connecting to my SharePoint environment, I am able to load the web successfully.

Can you clarify what Nuget packages are you are loading for the Microsoft.SharePoint.Client assembly?

[haniffait]

I have below nuget package. GriffinPlus.Lib.FastActivator(1.0.10) Microsoft.SharePointOnline.CSOM(16.1.9021.1200) SharePointPnPCoreOnline(3.11.1907) System.Configuration.ConfigurationManager(4.5.0) System.Runtime(4.3.1)

what nudget package you have?

Microsoft.Sharepoint.Client Nuget package available in Microsoft.SharePointOnline.CSOM(16.1.9021.1200)

[bcameron1231]

I also have Microsoft.SharePointOnline.CSOM(16.1.9021.1200)

I'm going to take a stab in the dark here. When you created your console app... did you create it as a .NET core app instead of .NET Framework?

If so, this would return a 400 error. This is because the current version of CSOM is built on .NET Framework and not .NET core.

Try to re-create the console app as a .NET Framework console app.

[haniffait]

Hi Cameron, Thank you so much for your help. it was really amazing. Yes, i done that, I am purely from java background, so i dont know, how to start built in C# or .Net. First i tried to connect the sharepoint with java, but it not allowing me, it was expecting secure password(unfortunately it was not present for java) from me. so i forcefully started to using C#. Do you know how to connect sharepoint online with java.. anyway Thanks again for your help

[bcameron1231]

Can you clarify that yes you can created it as a .net core app instead of a .net framework app?

[haniffait]

Of course, yes I can able to connect my SharePoint though .net framework instead of .net core

[bcameron1231]

Great! We'll close this ticket.

But to answer your second question, you can use OAuth to connect to SharePoint Online with Java. However, you have to do it through a registered application in Azure AD. If you search google for a little, there should be plenty of resources on how to implement OAuth with SharePoint.

Thanks,

[msft-github-bot]

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