Microsoft PowerPoint for Mac: Smarter Keep Source Formatting slide pasting experience
Versions captured by this deployment. Earlier versions and notices may be missing; first observed is not first published.
Rollout
- Ends
- 4 Dec 2026
Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".
- Microsoft's start date
- 8 Oct 2026
- Last changed by Microsoft
- 8 Oct 2026
- First seen here
- 19 Oct 2026
- Versions seen
- 1
What the notice says
Microsoft's text, with its sections, lists and tables; source markup removedWhat and why
We're improving the PowerPoint Keep Source Formatting paste experience. When users paste slides using Keep Source Formatting, PowerPoint will now import only the slide masters and layouts required for the pasted slides instead of importing all slide masters and layouts from the source presentation.
This change helps reduce presentation file size, improve performance when opening large presentations, and enhance collaboration experiences such as co-authoring by minimizing unnecessary design content in presentations. Users who prefer the previous behavior can continue using it through a setting that allows them to choose their preferred slide paste experience.
Rollout schedule
- General Availability (Worldwide): Rollout began in late September 2026 and is expected to complete by late October 2026.
Impact on your organization
Who is affected
- Users of Microsoft PowerPoint for Mac who paste slides using the Keep Source Formatting option.
Platforms and services
- Microsoft PowerPoint for Mac
What will happen
- When users paste slides with Keep Source Formatting, PowerPoint will import only the slide masters and layouts required by the pasted slides.
- Presentation file sizes may be reduced because unnecessary slide masters and layouts will no longer be imported by default.
- By minimizing unnecessary design content, smaller presentations may open faster and perform better during collaboration and co-authoring scenarios.
- Users who prefer the previous behavior can continue using it through a setting that allows them to bring over all slide masters and layouts from the source presentation.
Action required and recommendations
No action is required.
Compliance considerations
No compliance considerations identified. Review as appropriate for your organization.
What changed
Between the versions this installation saw, newest firstThis installation has seen one version of this notice, first on 19 Oct 2026. Later changes will show here.
Linked documentation
Microsoft pages the notice links toThe notice links to no Microsoft Learn or Support page that this installation reads.
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.
- Versions before 19 Oct 2026: this installation first saw the notice after Microsoft posted it.