Additional sign-in or account-related issues within Microsoft Teams for business
Hi LouAdamson
Thank you for reaching out.
I’m sorry to hear you're experiencing this issue, especially when you're self-employed and don't have an IT department to assist. Based on your description, it sounds like your email address may be associated as a guest or external user in another Microsoft organization's tenant, and Teams is automatically signing you into that organization instead of your own account.
Try leaving the unwanted organization:
- Open an InPrivate/Incognito browser window.
- Go to https://myaccount.microsoft.com/organizations
- Sign in using the same email address you use with Teams.
- Look for the unfamiliar organization under Organizations or Other organizations you collaborate with.
- Select Leave organization (or Leave) next to that organization.
- Confirm the prompt.
For reference:
- Leave an organization - Microsoft Entra External ID | Microsoft Learn
- Manage organizations for a work or school account in the My Account portal | Microsoft Support
If there's no "Leave" option:
If a Leave button is not available, or the process fails, your account may still exist as a guest account in that organization's tenant. In that case, the organization's administrator would need to remove your guest account before the association can be fully removed.
Reset Teams so it stops defaulting to that organization:
After leaving the organization, fully reset Teams sign-in state:
On Windows:
- Completely quit Teams from the system tray.
- Go to Settings > Accounts > Access work or school.
- If the unfamiliar organization appears, select it and choose Disconnect.
- Clear the Teams cache.
For new Teams, clear the contents of:
%userprofile%\appdata\local\Packages\MSTeams_8wekyb3d8bbwe\LocalCache\Microsoft\MSTeams
On Mac:
- Quit Teams.
- Clear the Teams cache from the following folders:
~/Library/Group Containers/UBF8T346G9.com.microsoft.teams
~/Library/Containers/com.microsoft.teams2
- Restart Teams and sign in again.
For detailed cache-clearing instructions, see: Clear the Teams client cache - Microsoft Teams | Microsoft Learn
I hope these steps help resolve the issue and allow you to access your own Teams account again. If you run into any errors during the process or notice anything unusual, feel free to share the details and I'll be happy to help further.
Thank you for your understanding, and I wish you a wonderful day ahead.
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