[Solved] Microsoft.SharePoint.Client.IdcrlException: The sign-in name or password does not match one in the Microsoft account system error in SharePoint Online

This SharePoint Online tutorial explains how to solve error “the sign-in name or password does not match one in the Microsoft account system” which comes while working with csom in SharePoint Online.

Recently I was trying to bind list templates to a dropdown list using client-side object model (csom) in SharePoint Online using visual studio 2017. While retrieving list items it gave below error: Microsoft.SharePoint.Client.IdcrlExpection: The sign-in name or password does not match one in the Microsoft account system. The error looks like below:

I was using the below csom code to retrieve items from a SharePoint list.

void BindItemsToDropDownList()
{
using (ClientContext clientContext = new ClientContext("https://onlysharepoint2013.sharepoint.com/sites/Raju"))
{
clientContext.AuthenticationMode = ClientAuthenticationMode.Default;
clientContext.Credentials = new SharePointOnlineCredentials("[email protected]", GetSPOSecureStringPassword());

Web web = clientContext.Web;
ListTemplateCollection templateColl = web.ListTemplates;
clientContext.Load(templateColl);

clientContext.ExecuteQuery();

//Further Code
}
}

private SecureString GetSPOSecureStringPassword()
{
try
{
var secureString = new SecureString();
foreach (char c in "YourAccountPassword")
{
secureString.AppendChar(c);
}

return secureString;
}
catch
{
throw;
}
}
}

the sign-in name or password does not match one in the Microsoft account

The error was coming because the Password was not correct for the Office 365 account user name I was trying.

The problem was I was not using that account from a long time, so the account password expired already. So I had to reset my Office 365 account password and then update the new password in csom code. Then it started working.

Once I gave the correct password, the error “the sign-in name or password does not match one in the Microsoft account” did not come.

You may like following SharePoint csom examples:

• the remote server returned an error 500 internal server error. SharePoint client object model
• the remote server returned an error (403) forbidden SharePoint client object model
• Steps to add items from CSV file to SharePoint Online List using PowerShell in CSOM
• How to Use CAML Query for Boolean field for SharePoint 2013/2016/Online Object Model CSOM

Hope this SharePoint tutorial helps to solve the sign-in name or password does not match one in the Microsoft account system error in SharePoint.