My Microsoft account was hacked and the password and recovery information were changed

The official recovery path is:

1. Start with the hacked account recovery flow using Microsoft’s sign-in helper tool. It asks for the account email address or phone number and then either provides the correct self-help path or offers the option to talk to an agent.
2. Scan the PC for malware before changing anything else. In Windows Security, open Virus and threat protection → Scan options → Full scan → Scan now. This matters because changing the password on an infected device can expose the new password again.
3. Try to reset the password. If sign-in is still blocked because the attacker changed the password and recovery details, use the Microsoft account recovery form.
4. Submit the recovery form with a working contact email. Microsoft sends the result to that working email address within 24 hours.
   • If Microsoft verifies the account, instructions to sign back in are sent to that same working email.
   • If Microsoft cannot verify the account, the form can be retried up to two times per day.
5. If access is restored, immediately review account settings that are commonly changed after compromise, especially:
   • connected accounts
   • forwarding
   • automatic replies
6. If there was an unusual sign-in alert and the account is still accessible anywhere, go to Security basics → Review activity and mark suspicious events as This wasn't me or Secure your account. Then change the password from Security basics.
7. If the account is blocked, use the Sign-in Helper for Outlook.com account unblocking. If unblocking by security code or password change does not work, continue with the Microsoft account sign-in recovery guidance.
8. If self-service does not restore access, use Contact Microsoft Support and select Get Help, then Contact Support for the best support option.

Important limits in the official process:

• Microsoft support agents cannot send password reset links.
• Microsoft support agents cannot access or change account details.
• Recovery depends on successful verification through the official recovery process.

References:

• How to recover a hacked or compromised Microsoft account
• Help with the Microsoft account recovery form
• What happens if there's an unusual sign-in to your account
• Unblock my Outlook.com account
• How to get a Microsoft account recovery code