Hi Kamil Grosovic,
Welcome to Microsoft Q&A.
I understand that you want to prove that you are the owner of your old 2006 MSN account.
Please kindly note that this is a public user‑to‑user forum, and I do not have the tools or authorization to unblock accounts, recover accounts, or bypass security measures.
To proceed, please try using the Account Recovery Form (ACSR) via https://account.live.com/acsr
When completing the form, please make sure to:
- Use an email address you currently have access to as the contact email
- Provide as many accurate details as possible, such as old passwords, frequent contacts/subject lines and submit from a familiar device/location.
- Wait 24–72 hours for a response. You may refine and resubmit up to twice per day.
- Please refer to this link if you need help with the recovery form: Help with the Microsoft account recovery form- Microsoft Support
Contact Support Team directly
If you are unable to complete the Account Recovery Form or are experiencing issues with it, please reach out directly to the Microsoft Support team. It may offer live chat and, depending on your subscription/region, an option to request a callback:
- Go to Contact - Microsoft Support
- Type a brief description of your issue in the search box
- Click "Get Help", then scroll to the bottom and select "Contact Support”.
- When prompted to select Products & Services and Category, choose the appropriate categories.
- Look for and select "Chat with a support agent in your web browser" (during business hours) or a similar callback option (if available). Explain your situation clearly.
Thank you for your understanding. If you have any further questions, please feel free to reach out.