File Sharing Problems

Can You @Mention External Guests in Word or Excel Comments?

Steve KSteve K Oct 26, 2026 869 views

Question details

The user wants to know if it is possible to use the @mention feature for external contractors or guest accounts within Word and Excel document comments.

Can You @Mention External Guests in Word or Excel Comments?
Product
Microsoft Word, Microsoft Excel
Device & OS
not provided
Scenario
Collaborating on documents hosted on a SharePoint site with external contractors who already have editing permissions.
Observed behavior
Internal users can be successfully tagged in comments, but external users and guest accounts cannot be @mentioned.
Before you start

Ensure you have the correct email addresses or direct contact information for your external guests, as you will need to notify them manually due to this feature limitation.

Solution 1Recommended

Use Alternative Notification Methods

Since @mentions are not supported for guests, use manual email notifications or direct link sharing to alert external contractors about your comments.

Microsoft currently restricts the @mention feature in Word, Excel, and PowerPoint comments to internal users only. Even if an external user has editing permissions on your SharePoint site, they cannot be tagged directly within the document.

1
Leave a standard comment

Highlight the text or cell in Word or Excel, right-click, and select 'New Comment'. Type your feedback without using the @ symbol.

2
Copy the document link

Click the 'Share' button in the top right corner of the application and select 'Copy Link' to get a direct URL to the document.

3
Notify the external guest manually

Draft an email or a message in your communication tool, paste the document link, and let the external guest know which sections they need to review.

Use Alternative Notification Methods
Web App Limitation: This limitation applies to both the desktop versions and the web applications of Word and Excel.
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Frequently Asked Questions

Why can't I @mention a guest who already has editing permissions?

Microsoft's current infrastructure restricts the @mention capability in Word, Excel, and PowerPoint comments exclusively to internal directory users. External or guest accounts are excluded by default, regardless of their specific file or SharePoint permissions.

Does this guest mention limitation apply to Word and Excel web apps?

Yes, the inability to @mention external or guest accounts is a universal limitation across Microsoft 365. It applies to the desktop applications, mobile apps, and the web-based versions of Word and Excel.

Will Microsoft add the ability to mention external users in the future?

Microsoft frequently updates its software based on user feedback. While it is not currently supported, submitting a feature request through the Microsoft Feedback Portal increases the likelihood of the development team adding this capability in a future release.