Managing personal Outlook.com account settings, security, and privacy
I understand your concern. It seems like you've already tried a number of troubleshooting steps, including changing your primary alias and updating your First and Last Name in your account profile. However, the issue persists.
Based on the information you provided and the search results I found, here are a few more suggestions:
- Clear the Auto-Complete list: In some cases, the display name might be cached in your Outlook client. You can try to clear this cache.
- Check "Mail Flow" settings: There's a setting in the "Mail Flow" section of the Outlook admin center that allows you to "Turn on sending from aliases". You might want to check if this setting is enabled.
- Delete and re-add your account: This is a known issue and one suggested workaround is to delete and re-add your account.
- Wait for changes to take effect: Sometimes, changes to your account settings might take some time to propagate. If you've recently made changes, you might want to wait for 24 hours and then check again.
As for your concern about the security of your account, if you have Multi-Factor Authentication (MFA) enabled and have recently changed your password, it's less likely that your account has been compromised. However, it's always a good idea to review your account activity regularly.
Regards Adeyemi