how can i recover a microsoft account if i dont know the email nor anything else, just its xbox account

Because only the Xbox gamertag is known and the email shown on the account looks unfamiliar, recovery depends on proving ownership of the underlying Microsoft account using Microsoft’s official tools.

Use these steps in order:

1. Check whether the main email is a Microsoft account
   • Go to https://account.microsoft.com and enter the main email address.
   • If a password prompt appears, that email is already a Microsoft account and can be used to sign in or reset the password.
   • If the message “We couldn't find an account with that username” or “That Microsoft account doesn't exist” appears, that email is not a Microsoft account. In that case, the Xbox profile is tied to some other Microsoft account (likely the one with the @osteoemail.ru address).
2. Try the Sign‑in Helper tool
   • If there are sign‑in issues or the correct email/alias is unclear, use the Sign‑in Helper tool to locate or recover the Microsoft account: Sign-in Helper.
   • This tool is designed for cases where the username or verification options are confusing or no longer recognized.
3. Use the Microsoft account recovery form
   • If the correct Microsoft account email for the Xbox gamertag cannot be accessed, fill out the account recovery form: Account recovery form.
   • Before filling it out:
     • Ensure access to a separate working email where Microsoft can send updates.
     • Gather as much information as possible about services used with the account (Outlook/Hotmail, Skype, Xbox, purchases like Minecraft, old passwords, etc.).
   • When completing the form:
     • Answer every question with as much detail as possible; guesses are allowed and wrong answers do not count against the request.
     • For Xbox, provide details such as the Xbox console hardware ID (from a console that frequently used that gamertag), and any other Xbox/Minecraft purchase information available.
   • Microsoft reviews the form and responds within about 24 hours. If the recovery request is denied, the automated system did not find enough matching data, and the account cannot be recovered through support.
4. If the account was hacked or email changed
   • If the @osteoemail.ru address was added by someone else (account takeover), follow the hacked/compromised account guidance and then use the recovery form as above. If the attacker has replaced all security info and the recovery form fails repeatedly, the account is effectively unrecoverable.
5. Check products and emails for clues to the correct account
   • Search all personal email inboxes for receipts from Microsoft (for Minecraft or other digital purchases). These receipts often show the Microsoft account email used.
   • If an email address from those receipts is found, test it at https://account.microsoft.com as described in step 1.

If none of these steps succeed (Sign‑in Helper, recovery form with detailed Xbox/Minecraft info, and searching all email accounts for receipts), there is no supported way to recover the Microsoft account behind the gamertag, and therefore no way to regain access to that Xbox/Minecraft license.

References:

• How to check if your email address is a Microsoft account
• Check products or services where you used your Microsoft account
• Help with the Microsoft account recovery form
• My username and password have stopped working
• I can't sign in to my Microsoft account
• How to get a Microsoft account recovery code
• Need help with hacked microsoft account - Microsoft Q&A
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• How do I send an email to Microsoft about my account being hacked and taken over by <removed> ? - Microsoft Q&A
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