A Microsoft Teams Free “ID” is the Microsoft account (email address) used to sign in, not something that can be looked up by others.
To find the Microsoft account used with Microsoft Teams Free:
- Check email inboxes for Microsoft receipts or mails
- Open each personal email account you use.
- Search for messages from Microsoft about purchases, subscriptions, or sign‑in/security notifications. These often show which email address is your Microsoft account.
- See also the guidance under Email accounts in “Check products or services where you used your Microsoft account.”
- Use Microsoft’s account-lookup help
- Follow the steps in Forgotten your Microsoft account username (linked from the Teams Free help article) to recover the Microsoft account username associated with Teams Free.
- If you can sign in to Teams Free in a browser or app
- Sign in to Microsoft Teams Free.
- The email shown in the account/profile area is the Microsoft account that functions as the Teams “ID.”
If the password for that account is forgotten, use the Reset a forgotten Microsoft account password flow referenced in the Teams Free article.
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