Cannot leave unknown-strange organization in Teams

Indeed, in some point you have accepted the invite.

If someone knows your email, they can add you to their organization in Teams, and Teams will send you an invitation for it. You have the ability to accept it or not.

The easiest way is to contact the organization who invited you and request them to remove you from previous Teams invite, (you can show them your screenshot as proof). This is the part that you don't have really an access. They need to remove you using their account.

Hi!

Welcome to Microsoft Q&A forum.

What you’re seeing in Microsoft Teams is actually not something you created, it means your email was added (or invited) to an organization tenant (in this case University of the Visayas). You cannot remove an organization from Teams yourself, only their admin can do it.

First, try and leave the organization manually by going to https://myaccount.microsoft.com/organizations and sign in with your personal account from there you should see: University of the Visayas, click it → select: Leave organization.

If the above method will not work, you need to contact the organization who invited you and request them to remove you from previous Teams invite, (you can show them your screenshot as proof)

Hello @Jaime E CLT

After reviewing your case, this issue typically occurs when your email address has already been added as a guest user in another tenant, or when there is cached sign‑in or sharing information in the Microsoft Entra ID (formerly Azure AD) portal.

Since the Teams settings aren't letting you toggle it off, you’ll need to "eject" yourself from the organization's side via the Microsoft My Account portal.

How to Leave the Organization

• Log in to the My Groups Portal: Go to myaccount.microsoft.com/organizations.
• Sign In: Use the same personal account shown in your screenshot.
• Find the Organization: Look for University in the list of organizations.
• Leave Organization: Click "Leave organization" next to that entry. You may have to confirm a few prompts.
• Re-sign into Teams: After leaving, sign out of the Teams app completely and sign back in. The entry should disappear.

Manage organizations for a work or school account in the My Account portal - Microsoft Support

If it is still appearing (Caching Issues)

If you have successfully left the organization via the portal but it still shows up in the Windows client, the app is likely holding onto old "token" data.

Clear the Teams Cache:

• Close Teams completely (ensure it’s not running in the system tray).
• Press Windows Key + R, type %appdata%\Microsoft\Teams, and hit Enter.
• Delete all files and folders in that directory.
• Restart Teams.

Clear the Teams client cache - Microsoft Teams | Microsoft Learn

If you still need my assistance, please come back with screenshots or any additional details so I can review it again and see if there’s anything more I can help you with.  

Have a nice day!  

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