A Microsoft file hosting and synchronization service.
Hello,
It appears that the hacker changed your Microsoft account email address (alias) and password. If the alias was a Microsoft domain email address, it may have been permanently deleted and might not be available to use with another Microsoft account.
For this reason, Microsoft recommends securing your account with a strong, unique password and enabling two-factor authentication, such as the Microsoft Authenticator app, to help verify your identity.
In this situation, you can submit an account recovery request through the Xbox account recovery form. This team may be able to assist specifically with compromised accounts. Provide as many accurate details as you can remember, and the team will respond to the contact email address you provide.
https://support.xbox.com/en-US/forms/recover-your-microsoft-account
If the hacker gained access to your account, they may also have been able to access your OneDrive files.
- If you still have access to your OneDrive files on your Windows desktop, make sure you move them to a local folder and then delete them. If the hacker permanently deleted the files, they may no longer be recoverable.