A Microsoft file hosting and synchronization service.
The described behavior (opening works from Files app + OneDrive, but edits are not saved) is consistent with issues where:
- The file is effectively read-only (e.g., storage full, permissions, or activation issues), or
- The app editing the file is working on a local copy rather than saving back to OneDrive.
From the available information, the following checks are relevant:
- Verify OneDrive storage is not full
- If the file is stored in OneDrive and storage is full, changes cannot be saved back.
- Check OneDrive space by going to the OneDrive website (http://onedrive.live.com) and reviewing used space, or from a desktop by selecting the OneDrive icon → Manage storage.
- Confirm the file is not opening read-only
- Files that open read-only will appear to accept edits in the app, but changes cannot be written back.
- Causes include:
- OneDrive storage full (see step 1).
- Office not activated or subscription expired, which can cause documents to open read-only. In that case, resolve activation issues as described in the “Unlicensed Product and activation errors in Office” guidance.
- Ensure the file is not restricted or locked elsewhere
- If the file is open in another app or session, OneDrive may not be able to upload the updated version. Close the file in other apps and try again.
- Try saving directly from the editing app to OneDrive
- Instead of relying on Files app integration alone, use the editor’s own Save / Save As and explicitly choose OneDrive as the location. This helps confirm whether the problem is with Files app integration or with OneDrive/Office itself.
If, after confirming storage, activation, and that the file is not read-only or locked, edits still do not persist when using Files + OneDrive, use the OneDrive app directly (open the file from the OneDrive app and save from there) as a workaround while further investigating with Microsoft support.
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