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MC1310683 Stay informedUpdated messageNew featureUser impact

Microsoft Teams: Standardized preview experience for PowerPoint, Excel, and Word files

Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.
Microsoft Teams
Microsoft 365 admin center

Rollout

Roadmap
558679

Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".

Schedule dates changed in the text

Date phrases in schedule sentences differ between the versions this installation saw
  • Seen 5 Aug 2026 late July 2026 → end of August 2026
  • Seen 7 Jul 2026 late June 2026 → late July 2026

Read from date phrases in Microsoft's text, not from notice metadata. A changed phrase can be a moved rollout, a new milestone or just rewording; "What changed" below shows which.

What the notice says

Microsoft’s text, with source markup removed
Updated August 5, 2026: We have updated the timeline. Thank you for your patience.  Introduction We’re introducing a standardized preview experience for Word, Excel, and PowerPoint files in Microsoft Teams across desktop and mobile platforms. This update improves performance, reliability, and consistency when previewing files, resulting in faster load times and fewer preview failures. Availability varies by platform; PowerPoint and Excel are supported on iOS and Android, while Word preview is currently available on iOS only. This message is associated with Roadmap ID 558679. When this will happen: General Availability (Worldwide):  Rollout will be completed by end of August 2026 (previously late July). How this affects your organization: Who is affected: All Microsoft Teams users who preview Word, Excel, and PowerPoint files Mobile users on iOS and Android (platform-specific availability applies) What will happen: Users will experience faster file preview load times in Teams. A standardized preview experience will be applied across Word, Excel, and PowerPoint files in Teams, with availability varying by platform:PowerPoint and Excel previewers available on iOS and Android Word previewer available on iOS only (Android support coming later) Users will be able to open protected files directly within Teams previews. Feature is enabled by default with no admin configuration required. This update does not change existing file storage, sharing permissions, or policies. Screenshot: Standardized preview experience for Word, Excel, and PowerPoint: > What you can do to prepare: No action is required from admins; the feature will be automatically enabled. Inform helpdesk and support staff of the updated preview experience. Update internal documentation referencing file previews in Teams. Communicate the improved experience to users if appropriate. Compliance considerations: No compliance considerations identified, review as appropriate for your organization.

What changed

Between archive captures, newest first

  1. Updated July 7,August 5, 2026: We have updated the timeline. Thank you for your patience.  Introduction … When this will happen: General Availability (Worldwide):  Rollout will be completed by late Julyend of August 2026 (previously late June).July). How this affects your organization: Who is affected: All Microsoft Teams users …

    • Tags New feature, User impact → Updated message, New feature, User impact

    Updated July 7, 2026: We have updated the timeline. Thank you for your patience.  Introduction We’re introducing a standardized preview experience for Word, Excel, and PowerPoint … When this will happen: General Availability (Worldwide):  Rollout will be completed by  late July 2026 (previously late June 2026.June). How this affects your organization: Who is affected: All Microsoft Teams users …

  3. · first version seen

Linked documentation

Microsoft pages the notice links to

The notice links to no Microsoft Learn or Support page that this installation reads.

Shared roadmap ID 558679

Not confirmed here

What this page cannot tell you
  • Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.
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