First, I couldn’t write the title until I got to a) the correct example online, then b) the proper credentials (a work-mate(s) hinted towards the answer) and c) the exact exception text “The sign-in name or password does not match one in the Microsoft account system.”
Sharepoint – as usual … SUPER FOR CONTRACTORS WHO GET PAID THE HOUR. (argggg).
First – do NOT use .net Core – use .net 7.7.x or 4.8. As a last ditch effort – I used this and boom all my previous experiments worked. FINALLY Success. Read the next paragraph and do NOT get fooled by the word “Core” in the needed NuGET package SharepointPNPCoreOnline .
Second – include the NuGet package SharepointPNPCoreOnline
A buddy and I found the main links together while screen sharing. I thank him for the head start – next was the MFA. A colleague hinted that our username is NOT first.last@mycompany.com but first.last@sharepointfrontpart.onmicrosoft.com so all this together and some google-fu and we have a solution!
Then here is your .NET class. I am sure there is a .NetCore solution – but at this point – I am happy to have gotten a context 🙂
using System;
using Microsoft.SharePoint.Client;
using System.Security;
namespace ConsoleAppSP_Net1
{
class Class1
{
public string site_url = "https://joescompanyonline.sharepoint.com/sites/BEST-SITE-EVER/";
public void try2_THIS_ONE_WORKS_FOR_MFA()
{
var authenticationManager = new OfficeDevPnP.Core.AuthenticationManager();
ClientContext context = authenticationManager.GetWebLoginClientContext(site_url, null);
Web web = context.Web;
User user = web.CurrentUser;
context.Load(web);
context.Load(user);
context.ExecuteQuery();
Console.WriteLine(web.Title);
Console.WriteLine(user.LoginName);
Console.ReadLine();
}
}
}
So in order of thanks – here are the links
https://www.c-sharpcorner.com/article/authenticate-sharepoint-using-pnp-authentication-manager/
https://github.com/pnp/PnP-Sites-Core/
Here is a link that I goes through all the authentications and why you might want to use them.
https://www.c-sharpcorner.com/article/authenticate-sharepoint-using-pnp-authentication-manager/