Credential Manager for Outlook :

I have an outlook email address and account.  Recently there was some sort of muddle, due, apparently, to having tried to access it from a laptop which I seldom use. I received a message from Microsoft suggesting that I should change my password.

That was done, and things worked ok until a new version of Thunderbird was installed.  This refused to accept the new password, and will not connect with Outlook.com unless there is a new message.

I need to find what passwords are stored in Windows Credentials Manager.
Yes, there are 'help' pages which explain how to do it, but none of them seem to work.