MC1523086 - Alternate text parameter for ODSP attached images in Teams

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Summary

Microsoft Teams will support adding alt text to OneDrive/SharePoint-hosted images shared in chats, enhancing accessibility with screen reader descriptions. This feature rolls out worldwide from early to mid-December 2026, requires no admin action, and allows users to add or edit alt text without changing the original image files.

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Published

Oct 23, 2026

Service

Microsoft Teams

Tag

New feature
User impact

Platforms

Desktop
Mac
Web

More information

What and Why:

Adds support for alternate text on OneDrive/SharePoint-hosted images shared in Microsoft Teams, improving accessibility for users who rely on screen reader functionality. 

Rollout Schedule:

General Availability (Worldwide): We will begin rolling out in early December 2026 and expect to complete by mid-December 2026.

Impact on Your Organization:

Who is affected:

  • Microsoft 365 users who share or receive image attachments stored in OneDrive and SharePoint through Microsoft Teams.

Platforms/Services:

  • Microsoft Teams (Windows, Mac, and web)

What will happen:

  • Users can add alt text to an image attachment while composing a message, and can add or update the description later by editing their sent message.
  • Screen readers can announce the saved description when users encounter the image in the Teams message.
  • The description is associated with the image in that Teams message; it does not modify the original image file in OneDrive or SharePoint.

Action Required/Recommendations:

No admin action is required. You may want to:

  • Notify help desk staff and end users about the change.
  • Update your organization's accessibility guidance to encourage concise, meaningful descriptions when sharing images in Microsoft Teams.

Compliance considerations:

No compliance considerations identified. Review as appropriate for your organization.