Powerpoint Master Templates Disappearing

Anonymous
2025-06-05T01:48:03+00:00

My master slides delete without warning, prompting or confirming when saving - is this a bug?

Microsoft 365 and Office | PowerPoint | For home | Windows

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John Korchok 236.6K Reputation points Volunteer Moderator
2025-06-05T16:27:56+00:00

When you view the Slide Master, you should see a pushpin icon to the left of the slide master. This indicates that the master will be preserved when you save the file. If that icon is not visible, please right-click on the slide master and choose Preserve Master.

Rarely, I see presentation where even preserved masters disappear. You should be able to prevent this by adding at least one slide from each slide master to the presentation. PowerPoint will not delete masters that are actively being used by slides.

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  1. Anonymous
    2025-06-10T20:43:21+00:00

    Hi yes... this absolutely the way to go. I didn't rate the answer well though, not because the answer was flawed because it isn't, it's perfect, but because this is a "work-around" and not fix to a feature that I can only assume that M365 thought was a good idea - to purge without prompting then saving to make the purge unrecoverable.

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  2. Steve Rindsberg 99,176 Reputation points MVP Volunteer Moderator
    2025-06-10T14:29:28+00:00

    Have you tried following John Korchok's advice above?

    That's likely the answer you're after.

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