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Fix Excel Online Showing Collaborators as Unknown or Guest Users
Question details
Users need to resolve an issue where invited collaborators and document editors are displayed as anonymous or guest users instead of their real names.
- Product
- Excel Online
- Device & OS
- not provided
- Scenario
- Co-authoring, reviewing, or leaving comments in a shared workbook in Excel Online.
- Observed behavior
- The workbook owner and invited collaborators appear as 'Unknown User' or 'Guest User' in the Manage Access panel and comments, even after their profiles have been set up.
Verify whether your collaborators are actively signed in to their Microsoft accounts when accessing the shared link, as accessing via an anonymous link automatically assigns them a guest label.
Change Sharing Settings to Specific People
Modify the sharing link permissions so users are required to sign in, ensuring their real profile names are captured and displayed in the document.
When an Excel Online document is shared using the 'Anyone with the link' setting, Microsoft allows anonymous access. This causes anyone who clicks the link without signing in to appear as a Guest User in comments and the Manage Access pane.
Open your workbook in Excel Online and click the 'Share' button located in the top-right corner of the interface.
In the sharing dialog, click the gear icon or the current link settings (which likely says 'Anyone with the link can edit').
Change the permission level from 'Anyone' to 'Specific people' or 'People in your organization', then click 'Apply'.
Enter the exact email addresses of your collaborators and send the invitation. When they access the file via this new link, they will be forced to log in and their names will appear correctly.
Request Collaborators to Manually Sign In
Instruct guest users to log in to their Microsoft accounts upon opening the shared document to resolve the unknown user display.
Try WPS Office for Seamless and Identifiable Collaboration
Avoid anonymous guest user confusion and complicated directory configurations by switching to WPS Office. It provides a lightweight, free alternative to Microsoft Office, offering robust cloud sharing and real-time collaboration where team members are easily identifiable.
- 1. Open your spreadsheet in WPS Office: Launch WPS Office and open the workbook you want to collaborate on.
- 2. Click Share: Navigate to the top-right corner and click the 'Share' button.
- 3. Set precise permissions: Choose 'Specific People' to invite collaborators via email, ensuring their identities are tracked accurately during co-authoring.
Frequently Asked Questions
Why do comments show 'Guest User' instead of a name in Excel Online?
This happens when the document is shared using an 'Anyone with the link' setting. This allows users to access, edit, and comment on the file without signing into a Microsoft account, defaulting their identity to 'Guest User'.
Can I force users to sign in to view my Excel Online file?
Yes. By changing the sharing settings from 'Anyone with the link' to 'Specific people' or 'People in your organization', users will be required to authenticate with their Microsoft account, which resolves the unknown user issue.
Does my organization's directory affect how names are displayed?
Yes. In enterprise environments using Microsoft 365, if an external user is not added as a registered guest in your organization's Active Directory, their name might not resolve correctly in the Manage Access dialog.
