MacBook Pro MacOS High Sierra & Hotmail 2024 not linking to MacBook Pro Mail

I have not been able to send/receive mails on my MacBook Pro since Microsoft's new authentication process was introduced in September 2024.

I would like to be able to do this again.

I have a MacBook Pro 13",2017, using MacOS High Sierra Version 10.13.6

My mail is "@live.com which I understand is "hotmail" account still supported by Microsoft.

I have been receiving mail on my "hotmail" account but it no longer appears on my MacBook Pro's mail.

I was told that this is due to the new authentication process that Microsoft has introduced.

In trying to remedy this I have :

Removed all my mail accounts on the Mac Mail

Cleared all my Safari and Chrome history.

Then tried to enter my hotmail account details anew :

-In the Mail app on the Mac I selected Mail - Accounts

-This lead to the Internet Accounts sets up your accounts..........

-I selected Microsoft Exchange, shown as an E with an X Exchange

-I was asked to input Name, Email Address, Password

-Having done so I received the message : "Unable to verify account name or password." In red.

I have also set up another account, as an Alias, in Microsoft Outlook, as suggested in one note,

but got the same resultwhen trying to set the Outlook account up in "Mail" on the MacBook Pro.

IE "Unable to verify account name or password." In red.

I have reset my email password to make sure that it wasn't an error on my part.

I am at a loss as to what to try next........anyone got any ideas ?

Paul