A Microsoft file hosting and synchronization service.
Hi Yui,
From your description, this behavior is most commonly seen when annotations are added using OneDrive’s lightweight annotate experience rather than the full PowerPoint Draw tools. In those scenarios, the markup can be session‑based and may not be written back into the actual PPTX file. When that happens, no new saved version is created, which explains why Version history and the OneDrive Recycle Bin remain empty.
If the annotations do not appear in Version history and nothing is available to restore from the Recycle Bin, then unfortunately there is no supported way to recover them with the current Microsoft 365 tools. This typically indicates that the annotations were never embedded into the presentation file itself.
You can still double‑check a couple of things, although in cases like this they often do not return the missing annotations:
- Open the file in the PowerPoint desktop app and review Version History from the file name in the title bar.
- Confirm you are signed in to the correct Microsoft account in OneDrive and recheck the file’s Version history there.
If those checks do not show an annotated version, recovery is not possible.
For future edits, it’s safer to add important markup in the full PowerPoint desktop app using the Draw tools, save the file normally, and allow OneDrive to fully sync. For heavy or critical annotation work, using PDF is often more reliable than relying on lightweight annotation in OneDrive for PowerPoint files.
Please let me know if this proves useful to you, or if you would like further assistance.
I'm looking forward to your reply.
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