Teams uses the visible email address on the underlying Microsoft account profile, which can be any alias on that account, not just the primary alias. When a different alias is used to sign in or is visible on the profile, Teams meeting invites can appear to come from that alias.
To stop Teams sending invites from the alias account, adjust which alias is visible and used for sign-in on the Microsoft account that backs Teams:
- Make sure the correct email is the primary alias
- Go to Manage how you sign in to your account: https://go.microsoft.com/fwlink/p/?linkid=842796.
- Under Account aliases, select Make primary next to the email address that should be used for Teams.
- Hide or remove the unwanted alias if appropriate
- If the alias is only used for Teams and should not appear anywhere:
- On the same Manage how you sign in to your account page, select Remove next to the alias you no longer want.
- If it is a Microsoft-domain address (@outlook.com, @hotmail.com, @live.com, @msn.com), removing it permanently deletes that alias and it cannot be reused on any Microsoft account.
- If it is a non-Microsoft domain (for example, @gmail.com), it usually becomes available to be added to another Microsoft account.
- If the alias must stay on the account but should not be used for sign-in:
- Go to https://account.microsoft.com → Your info → Sign-in preferences.
- Clear the checkbox for that alias so it cannot be used to sign in.
- Confirm which contact info is visible in Teams
- Teams Free and other consumer scenarios surface the email address and profile information from the Microsoft account. If a different alias was used to sign in at any point, it can be added to the Teams profile.
- Sign out of Teams completely, then sign back in using the email address that is set as the primary alias and allowed for sign-in.
After these changes, new Teams invitations should use the primary, visible alias that remains enabled for sign-in.
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