Posted inSharePoint Online

MC1470416: OneDrive and SharePoint Add Anchored Comments to PDF Viewer for Collaborative Review

3 minutesPosted inSharePoint Online
MWPRO IMPACT SCORE
OPERATIONAL IMPACT
27
0 25 50 75 100
MODERATE IMPACT • ASSESS BUSINESS IMPACT
Recommended Action:
Take a look and decide whether this affects your tenant, users or support teams.
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Primary Audience

Microsoft 365 AdminsSharePoint AdminsIT ManagersService OwnersEnd Users
Why this score?
AI Confidence
HIGH
Enough detail is available to trust this assessment.
Assessment Reasoning
This is a new feature that enables anchored comments in PDFs within OneDrive and SharePoint web viewers. It is enabled by default and requires no admin configuration, limiting admin impact to communication and awareness. The user experience changes are noticeable for those reviewing PDFs, but not disruptive. Urgency is moderate as the rollout starts soon, but no immediate action is required beyond informing support teams and updating guidance.
20
🛡️ Admin Impact
LOW
40
👥 User Impact
MEDIUM
30
⚡ Urgency
MEDIUM
20
🔧 Effort
LOW
ℹ️ WHAT YOU NEED TO KNOW
📌

AT A GLANCE

Anchored comments are coming to the PDF viewer in OneDrive and SharePoint web. Users can comment on specific spots or text, with replies and @mentions for better collaboration.
👥

END USERS

Users will see new options to add and reply to comments on specific areas of PDFs.
🛡️

IT ADMINS

Consider informing users and support teams and update internal collaboration guidance on PDF commenting features.
📅

ROLLOUT TIMELINE

Upcoming:
Mid-Oct to Mid-Nov 2026

📢 Official Microsoft Message Center Announcement

Microsoft OneDrive and SharePoint: Anchored comments in the PDF viewer
Message ID: MC1470416

[What and why:]

Microsoft is adding anchored comments to the PDF viewer in OneDrive and SharePoint on the web. Users can attach a comment to a specific spot on a page, or to selected text, and collaborate through replies and @mentions — bringing PDF review to parity with commenting in Office documents. This feature will be on by default and requires no admin action.

[Rollout schedule:]

General Availability (Worldwide, GCC, GCC High, DoD): We will begin rolling out mid-October 2026 and expect to complete by mid-November 2026.

Note: This is a gradual rollout, so not all users will see the feature at the same time.

[Impact on your organization:]

Anchored comments appear in the Microsoft 365 file viewer when a PDF is opened in OneDrive or SharePoint on the web.

Users will be able to:

  • Comment anywhere — click a spot on a page to add a comment anchored to that location.
  • Comment on text — select text and attach a comment to it.
  • Collaborate — reply, @mention, see visual anchor indicators, and navigate between a comment and its anchored content; full keyboard and screen-reader support.

Who is affected: 

  • Users viewing PDFs in OneDrive and SharePoint on the web.

Default state: On by default for eligible users; no new anchored-comments-specific admin control is introduced.

Admin control: No new anchored-comments-specific control is introduced. Existing protections apply — sensitivity labels, Purview DLP, and Information Rights Management (IRM) on rights-managed libraries.

[Action required / Recommendations:]

No admin action is required before rollout. You may want to:

Inform your PDF users and helpdesk/support teams about the new commenting experience.

Update internal collaboration guidance (commenting on a spot, text, or annotation; replies and @mentions; downloading with or without comments).

Source: Microsoft Message Center • Analysed by MWPro

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