SharePoint Document Issues

Fix SharePoint Mentions Not Working in List Attachments

Maira Mehtab Sep 27, 2026 869 views

Question details

Users are unable to use the @mentions feature in documents that are attached to SharePoint list items.

Product: SharePoint
Device & OS: not provided
Scenario: Attempting to collaborate and mention colleagues within a file attached directly to a SharePoint list.
Observed behavior: The mentions feature fails to function in list attachments, even when the user possesses Contribute or Full Control permissions, due to inherent platform limitations.

Before you start

Verify that you have Contribute or Full Control permissions on your SharePoint site, as you will need the ability to create Document Libraries and modify List columns to apply the workaround.

Solution 1Recommended

Use a Document Library with a Hyperlink Column

Since list attachments do not support mentions natively, storing the file in a regular Document Library and linking it to the list bypasses this limitation.

SharePoint handles files stored in Document Libraries differently than files attached to list items. Document libraries fully support Microsoft Office online collaboration features, including @mentions, whereas list attachments lack this advanced functionality.

Upload to Document Library

Navigate to your SharePoint site and upload your target document to a standard Document Library instead of attaching it directly to a list item.

Copy the File Link

Locate the uploaded file, click the three dots (ellipsis) next to the file name, and select 'Copy link'.

Add a Hyperlink Column

Go back to your SharePoint List, click 'Add column' at the end of your headers, and select 'Hyperlink' as the column type.

Link the Document

Edit the relevant list item and paste the copied Document Library link into the newly created Hyperlink column.

Collaboration Enabled: Opening the file via this hyperlink will launch it in the full Office online viewer, restoring your ability to use @mentions.

Solution 2

Automate File Migration Using Power Automate

If users continue to upload attachments to list items, you can use Power Automate to automatically copy them to a Document Library where mentions work.

Free Microsoft Office alternative

Try WPS Office for Seamless Document Collaboration

If platform limitations in SharePoint and Microsoft Office are slowing down your team's workflow, consider switching to WPS Office. It offers a powerful, lightweight, and highly compatible alternative for everyday document editing and collaboration without the complex permission hurdles.

1. Download the Software: Visit the official WPS Office website to download the free suite for your operating system.
2. Open Your Documents: Launch WPS Office and open your existing Microsoft Office files seamlessly without formatting loss.
3. Collaborate Instantly: Use the Review tab to insert comments, tag changes, and collaborate efficiently with your team.

Fully compatible with Microsoft Word, Excel, and PowerPoint formats (.docx, .xlsx, .pptx)Built-in robust collaboration tools and commenting featuresLightweight installation with zero bloatwareFree to use with a familiar, easy-to-master interface

Frequently Asked Questions

Why do @mentions work in regular SharePoint files but not in list attachments?

SharePoint treats list attachments and document library files differently on the backend. Document libraries are designed to fully support Office Online's rich co-authoring and collaboration features (like @mentions), whereas list attachments are treated as basic flat files without these advanced capabilities.

Can I fix this issue by granting users Full Control permissions?

No. The inability to use @mentions in list attachments is a platform limitation regarding how the file is stored, not a permissions issue. Users with Full Control or Contribute permissions will still encounter this problem.

Is Microsoft going to fix mentions in list attachments?

Currently, there is no setting to change this behavior as it is an inherent limitation of SharePoint. You can submit feature requests directly through the Microsoft Feedback Portal or within the Office app to urge Microsoft to update this functionality.

Document & File Issues