Managing personal Outlook.com account settings, security, and privacy
Hi @SB
First, please feel free to check out the AI answer
I’m sorry your wife is dealing with this. Since the password, phone number, and secondary email were all changed, this should be treated as a compromised account rather than a normal password-reset issue.
Submit the https://account.live.com/acsr from a device and location your wife previously used with the account. Include as much historical information as possible, such as old passwords, contacts, recent email subject lines, Skype details, or Xbox information. An approximate answer is better than leaving a field blank.
Please note that forum moderators and support agents cannot manually change the account details or grant access without passing the ownership checks, even through chat or phone support. In the meantime, your wife should immediately change the passwords for any connected email accounts and other services where the same password was used.
Thank you for your understanding and have a nice day!