Can't leave Organization that no longer exists

Dear @James Nunn,

I completely understand how frustrating it is to see an old organization still listed in your account, especially when the original account is no longer available and the Leave option doesn’t work as expected.

Based on what you’ve described, this behavior is actually a known limitation with how Microsoft Entra (Azure AD) guest accounts are managed. Even though the original account or organization is no longer active, a guest reference to that organization still exists in the background directory.

Normally, users can leave external organizations themselves, however, there are cases where this isn’t possible and the removal must instead be done from the organization side by an administrator. And if the original tenant or account has already been deleted or is inactive, self-service removal will fail entirely and requires backend cleanup.

For more information, please refer to this Microsoft Official Document here: Leave an organization where you have a guest account

In this case, I recommend try again by opening this in InPrivate / Incognito browser > then, sign in with your current account and try accessing Organizations again > choose Leave.

If the problem still persists, in this case, the only way is to contact Microsoft Support by creating a support ticket through the Microsoft 365 Admin Center. The support team has the ability to investigate this further and intervene on the backend to remove the orphaned guest reference from your account. For reference:  Get support | Microsoft Docs   

Note: Please understand that as a forum moderator, my role is to provide general guidance and troubleshooting support. I don’t have access to internal systems or backend tools, and I appreciate your understanding of these limits.

I hope the information shared helps point you in the right direction. Please try the steps above and let me know if they work. If not, we can continue working together to narrow this down.

The first response may not always resolve the issue right away, but with your help and more details, we can work toward a solution.

Thank you for your patience and understanding. I'm looking forward for your reply.

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The guest organization entry must be removed from the directory side; the self‑service Leave action cannot complete because the backing organization/account is already disabled or deleted.

In this situation, the only resolution is for an administrator of that external organization (or Microsoft support for that tenant) to remove the guest user object manually:

1. The external organization’s admin signs in to the Microsoft Entra admin center.
2. Go to Entra ID → Users → locate the guest account corresponding to the affected Microsoft account.
3. Remove the guest user:
   • Either delete the user directly, or
   • If the user has already left and is soft‑deleted, go to Deleted users, select the user, and choose Delete permanently.

If the organization has been deprovisioned or no admin is available, contact Microsoft support and request removal of the guest account from that tenant. Reference that the self‑service Leave flow fails because the source account/tenant no longer exists.

After the guest account is removed from the external tenant (or permanently deleted from Deleted users), the organization entry will no longer appear under Other organizations you collaborate with in the My Account portal.

References:

• Leave an organization where you have a guest account
• Manage organizations for a work or school account in the My Account portal
• Struggling to delete my personal Microsoft account - Microsoft Q&A
• Personal Microsoft account cannot be closed due to organization link (Error AADSTS5000225) - Microsoft Q&A