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How to Fix Microsoft Loop Address and Tagging Problems

Maira Mehtab Sep 22, 2026 868 views

Question details

Users need to resolve issues where a shared Microsoft Loop workspace incorrectly displays Outlook addresses or loses its member-tagging functionality.

Product: Microsoft Loop
Device & OS: not provided
Scenario: Collaborating in a shared Microsoft Loop workspace that includes a mix of personal and business accounts.
Observed behavior: Unexpected Outlook addresses are displayed for members, and the member-tagging (@mention) features stop working or disappear entirely.

Before you start

Verify whether the original Loop workspace was created using a personal Microsoft account or a business account, as collaboration capabilities vary significantly between the two.

Solution 1Recommended

Verify Workspace Ownership and Account Types

Ensure that the workspace is hosted by an active business account to maintain full member-tagging functionalities.

Microsoft Loop workspaces tied to personal accounts do not support the same advanced tagging and member-management features as those tied to business or enterprise accounts. If the original business account owner leaves the workspace, tagging capabilities may break.

Check the workspace creator

Ask the team member who originally created the workspace to confirm if they used their work/school account or a personal Microsoft account.

Verify the owner's active status

Ensure the business account that created the workspace is still active and has not been disabled or removed from your organization's Azure Active Directory.

Migrate to a business-hosted workspace

If the current workspace is hosted on a personal account, have a business account user create a new Loop workspace and manually transfer the components to restore full tagging functionality.

Account Limitation: Personal Loop workspaces inherently lack the rich directory lookup required for seamless @mention tagging across different organizations.

Solution 2

Re-invite Members with Correct Email Addresses

Address unexpected Outlook alias displays by clearing cached permissions and re-inviting members using their primary organizational emails.

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Frequently Asked Questions

Why can't I tag someone in a Microsoft Loop component?

Tagging (@mentions) relies on the organization's directory. If you are using a personal Microsoft account, or if the person you are trying to tag is outside of your organization (a guest), the tagging feature may be disabled or severely limited.

Why does an unexpected Outlook address show up in Loop?

This usually occurs when sharing a workspace across different tenant types (e.g., business to personal). Microsoft systems sometimes assign a proxy or default outlook.com alias to accounts that lack a standard Exchange mailbox in that specific directory.

Can I migrate a personal Loop workspace to a business account?

Currently, Microsoft Loop does not offer an automated migration tool to move a workspace from a personal account to a business account. You must manually create a new workspace using the business account and copy over the content.

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