Additional sign-in or account-related issues within Microsoft Teams for business
If the organization is listed as a guest or external organization, it can usually be removed from the My Account organizations page:
- Open My Account.
- Work or school account:
https://myaccount.microsoft.com - Personal account or email one-time passcode: use a My Account URL that includes the tenant name or tenant ID.
- Work or school account:
- Select Organizations in the left pane, or select Manage organizations.
- Under Other organizations you collaborate with (or Organizations if there is no home organization), find the organization.
- Select Leave.
- Confirm by selecting Leave again.
Important details:
- The Home organization cannot be removed by the account holder. Only an administrator can remove that account from the home organization.
- If Leave is not available, or a message appears saying permission is required, that organization does not allow self-service removal or the account is disabled. In that case, the organization’s admin or privacy contact must remove the account.
- In Teams, the same organization management may also be reachable from the profile picture menu through View account > Organizations.
- Leave an organization where you have a guest account
- Hello, "How can I remove a previously associated organization's Microsoft tenant from my personal Microsoft account, as it's still appearing after two years?" - Microsoft Q&A "How can I remove a previously associated organization's Microsoft tenant from your personal Microsoft account, as it's still appearing after two years?"
- How to Clean Up Organizations and Accounts in Microsoft Teams - Microsoft Q&A