(Updated) Outlook for Android supports PDF attachment preview [MC1182710]

Message ID: MC1182710 (Updated)

Updated January 13, 2026: We have updated the timeline. Thank you for your patience. 

[Introduction]

To improve mobile productivity and streamline file access, Outlook for Android will soon support in-app PDF attachment previews. This update aligns with user feedback requesting faster, more integrated document viewing experiences without needing to switch apps.

This message is associated with Roadmap ID 520386.

[When this will happen:]

General Availability (Worldwide): Rollout begins in late November 2025 and is expected to complete by end of January 2026 (previously late December).

[How this affects your organization:]

Who is affected:

• All users of Outlook for Android across commercial and education tenants.

What will happen:

• Users will be able to preview PDF attachments directly within the Outlook for Android app.
• The built-in previewer will launch automatically when a PDF is opened.
• Users can still choose to open PDFs in other apps via the overflow menu.
• This feature will be enabled by default; no admin configuration is required.

[What you can do to prepare:]

No action is required. This feature will be enabled automatically.

Optional steps:

• Communicate this change to helpdesk staff to reduce potential support inquiries.
• Update internal documentation if you reference mobile attachment handling.
• If your organization prefers users to use a specific PDF viewer, consider communicating usage guidance.

[Compliance considerations:]

No compliance considerations identified, review as appropriate for your organization.

Source: Microsoft

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