Hi Borna Stojak,
It sounds like you can still play, but when you sign in on another device the verification code is being sent to an old email address you can no longer access. That typically means the old email is still saved as a sign-in verification method on the Microsoft account that your Minecraft account uses.
Here are the supported ways to fix it:
1, Update your Microsoft account verification methods
If you are able to sign in to your Microsoft account on any device, review the Security section at https://account.microsoft.com/security
From there, you may be able to add a new verification method (such as another email or an authenticator app) and then remove the old email once the new method is confirmed. Verification changes require access to at least one existing security method.
2, If you cannot receive any codes at all, use the Microsoft account recovery form (ACSR)
If every sign-in attempt forces a code to the inaccessible email and you cannot pass verification, the supported option is the Microsoft account recovery form: https://account.live.com/acsr.
The form is designed to verify ownership using account history details, so completing it with as much accurate information as possible is important. For official guidance on what information helps and how the form works, see the support article: https://support.microsoft.com/en-us/account-billing/help-with-the-microsoft-account-recovery-form-b19c02d1-a782-dee6-93c3-dc8113b20c42
3, Contact Microsoft Support
If you are blocked at sign-in and need the supported support-routing experience, follow below steps to reach a live chat agent:
- Visit the Microsoft Support contact page: Contact - Microsoft Support
- In the search bar provided on the page, type "Account Security" and press Enter.
- Click on the "Get Help" button that appears.
- Scroll down the page until you see and click on the "Contact Support" option.
- When prompted to select your product or service, choose "Other Products".
- For the category, choose "Manage Account Security".
- Look for and click on "Chat with a support agent in your web browser".
- When prompted, provide a valid contact email where Microsoft can reach you regarding your case.
- Explain your situation clearly: Be concise but provide all the relevant details.
As fellow users on this public forum, contributors do not have access to account data or internal tools to remove verification methods or bypass security checks.
I hope this clarifies which steps are actually effective for your situation and how to proceed with official recovery and support options.