Managing personal Outlook.com account settings, security, and privacy
@Brooke Lajoie said
I have also tried [everything that Microsoft suggest and then some]
Might be that Mother Microsoft has put a lock on your account and won't let you make any security changes.
Can you get to your advanced Security settings at https://account.microsoft.com/security ?
Can you "Create a new app password" or add a new verification email at
https://account.live.com/proofs/manage/additional ?
What does the Account Sign-In Helper say about the status of your account?
- In a Private/Incognito browser session, open: https://aka.ms/sign-in-helper
- Scroll down to "Choose how you normally sign in, then enter your details"
- Click "With an email address"
- Enter your email address and click [OK]
If Mother has locked you from making any Security changes, all you can do it not attempt any security changes for 48 hours and see if she will let you back in.
Similar case:
https://learn.microsoft.com/en-us/answers/questions/5986190/cant-change-my-password-or-make-my-account-passwor