Hi Mike Bradley, I can imagine how stressful it must feel to lose access to an account you’ve had for 30 years especially with important archived emails tied to it thats a big deal
Start by going to Microsoft Support choose Can’t sign in and select Outlook.com to get help this will guide you to live chat or even a callback option. If that doesn’t work, fill out the account recovery form at account.live.com/acsr with as much detail as possible and keep refining it if needed. Live chat or a callback is usually faster than forms and if you’re still stuck ask for escalation through support or the Microsoft Q&A community.
When you try to sign in do you get an error message like account doesn’t exist or password incorrect or “account locked?
Best regards
Lucky