A family of Microsoft presentation graphics products that offer tools for creating presentations and adding graphic effects like multimedia objects and special effects with text.
Try this in order:
- Save the file locally first.
- In PowerPoint, select File > Save As.
- Select This PC.
- Select Browse, choose a simple local folder such as Documents, give the file a new name, and select Save.
- If the file saves there, the issue is likely related to the original save location.
- If saving to OneDrive was intended, save manually instead of relying on AutoSave.
- Select File > Save As.
- Select OneDrive.
- Choose the folder and save the presentation.
- If the presentation still will not save, create a new presentation and move the slides into it.
- Open a new blank presentation.
- Import or reuse the slides from the problem file.
- Save the new file locally.
- This helps if the original presentation is corrupted.
- Make sure Office is updated.
- In PowerPoint, go to File > Account > Update Options > Update Now.
- If the error mentions the file is in use or loaded by another user, test whether the Windows user profile is the cause.
- Create a new Windows user account.
- Sign in to that account and try saving a new PowerPoint presentation there.
- If saving works in the new account, the problem is likely related to the original user profile.
- If saving to a cloud-synced or external location, try a standard local folder instead.
- Save to Desktop or Documents first.
- Then move the file afterward if needed.
A practical end-to-end path is: save to Documents with File > Save As > This PC > Browse, then if that fails, create a new blank presentation and save that one locally, then update Office and test from a new Windows user account.