Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
For your privacy and security, I have covered the personal information included in your post. Please avoid sharing any personal or sensitive information publicly, such as serial numbers, order details, email addresses, phone numbers, or case-related information.
Hi Yusuf Sinah,
I understand how frustrating it can be to still have access to the recovery contact but not remember the complete address of the old account.
Please note that the username lookup intentionally displays only a partially masked username for privacy. Neither community members nor Microsoft Support can reveal the hidden characters. The account recovery form also cannot identify or reconstruct a forgotten username, as it requires the complete account address before the verification process can begin.
One additional option is to contact someone you previously exchanged messages with and ask them to check the full sender address in an old email, reply, or saved contact. You may also search your recovery mailbox for old Microsoft notifications, replies, or receipts that might show the complete address.
Once you identify the full address, use the Microsoft Sign-in Helper to check the available recovery options.
Please do not share your recovery address, passwords, verification codes, or other private account information in this public forum. I know this isn't the news you were hoping for, but I wanted to make sure you got the most accurate information about your situation. Thank you so much for your understanding.
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