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  "description": "Microsoft will upgrade the backend service for Captions & Subtitles in PowerPoint by September 2026. Users with versions older than 16.0.19426.20218 (Windows) or 16.103.1207.4 (macOS) will lose access. Organizations should update PowerPoint to maintain this feature without changing settings.",
  "path": "/m365-message-center/message/mc1231437/",
  "publishedAt": "2026-02-13T01:00:15.000Z",
  "site": "https://blog.tophhie.cloud",
  "textContent": "🚨\n\n**Major Update:** This post contains a significant change that may impact your organisation.\n\n**[Introduction]**\n\nTo maintain a high-quality and reliable experience for live **Captions & Subtitles** in the Microsoft 365 PowerPoint app, Microsoft is upgrading the backend service that supports this capability. As part of this improvement, older Office client versions will no longer be supported. Updating to the minimum required PowerPoint version ensures continued accessibility, performance, and reliability.\n\n**[When this will happen:]**\n\n\n\n\nUpgrade**** by the **end of September 2026**\n\n\n\n\n**[How this affects your organization:]**\n\n**Who is affected:**\n\n  * Organizations using **Microsoft 365 PowerPoint app (Win32 or Mac)**\n  * Users running PowerPoint versions earlier than:\n    * Windows (Win32): **16.0.19426.20218**\n    * macOS: **16.103.1207.4**\n\n\n\n**[What will happen:]**\n\n  * Users on **unsupported versions** will**lose access to Captions & Subtitles** after the listed dates.\n  * There is **no change** for users on **supported versions**.\n  * **No changes to default settings** or admin configuration are required.\n\n\n\n**[What you can do to prepare:]**\n\n  * Review PowerPoint client versions across your organization (Windows and Mac).\n  * Update Office clients to:\n    * Windows (Win32): **16.0.19426.20218 or later**\n    * macOS: **16.103.1207.4 or later**\n  * Plan upgrades ahead of **September 2026** , especially for environments on managed or restricted update cadences.\n  * Notify helpdesk and accessibility stakeholders.\n\n\n\n**[Compliance considerations:]**\n\nNo compliance considerations identified, review as appropriate for your organization.",
  "title": "MC1231437: Update PowerPoint to maintain Captions",
  "updatedAt": "2026-02-13T01:00:15.000Z"
}