Managing personal Outlook.com account settings, security, and privacy
Please note that our forum is a public platform, and we will modify your question to hide your personal information in the description. Kindly ensure that you hide any personal or organizational information the next time you post an error or other details to protect personal data.
I’m sorry this happened. The unfamiliar email address is likely a recovery method or alias added by the attacker. Unfortunately, knowing it will not let you receive the verification code or identify the person behind the attack. Microsoft and forum members also cannot trace or disclose who owns that address.
Since your email, phone number, password, and verification methods were changed, please use Microsoft’s official hacked account recovery process. Start with the Sign-in Helper on that page. If directed to the recovery form, submit it from a device, browser, and location previously used with the account. Include old passwords, contacts, exact email subject lines, purchase information, and any other details only the account owner would know. Microsoft recommends providing as much accurate information as possible.
Before attempting recovery again, scan your computer for malware. Keep copies of the Microsoft security notifications, but do not post the unfamiliar address, your real email, phone number, recovery codes, or screenshots containing personal information publicly. Genuine Microsoft account notifications normally come from an address ending in @accountprotection.microsoft.com, although you should still access recovery pages directly rather than through email links.
The missing Sent messages and the iPhone download error do not identify the attacker. They may be related to the account no longer syncing correctly, but account access must be recovered first.
Please kindly note that Microsoft Community moderators cannot manually restore the account or replace its security information.