The servers that supported Money no longer exist. So Money doesn't "know" that you have changed your Live ID password.
Your old Live ID password should still work with you Money file. But most people here recommend that you remove your Live ID from your Money file by disconnecting from the internet, opening Money with "I want to work offline" and then using
File>Password Manager to remove your Live ID password. You can then set up a local Money password if you want to continue to use a password.
Be sure that you record that password and keep copies in a safe place. You will not get into your Money file if you loose it.
Post back if you need help with any of this.
Bill Becker