Managing personal Outlook.com account settings, security, and privacy
This usually means one of two things is still configured on the account:
- An unexpected alias is attached to the Microsoft account.
- Outlook.com is forwarding or redirecting mail through a rule or forwarding setting.
Since the address does not appear in the normal account view and messages are bouncing back from that unknown address, check both areas:
- In Outlook.com, open Settings and review:
- Mail > Rules
- Forwarding
- IMAP Delete anything unfamiliar.
- In the Microsoft account settings, review aliases and sign-in settings:
- Go to Your info > Sign-in preferences.
- Check every alias listed.
- If an alias is unfamiliar, remove it if available.
- Also verify which aliases are allowed to sign in and save the changes.
- Review security info:
- In the account security area, make sure all verification methods and contact info belong to the account owner.
- Secure the account immediately:
- Change the password.
- Enable two-step verification.
- Remove any unrecognized devices.
- Use Sign out everywhere if available. One documented case notes this can take up to 24 hours to take effect.
- If the unknown address still does not appear anywhere in aliases, rules, forwarding, or security info, use Microsoft account support paths:
Important: support agents cannot change account details directly or send password reset links, so the key self-service checks are aliases, sign-in preferences, rules, forwarding, and security info.