Hi
Thank you for clarifying. Since over 50 files moved successfully, I suggest testing one of the five affected files directly:
- Open Livedrive’s website in Microsoft Edge and download the file to a local folder outside Livedrive.
- Check whether the downloaded file opens normally in PowerPoint.
- If it does, try uploading that copy to the intended Livedrive folder through the website.
Keep the original files until you have confirmed the uploaded copies open correctly.
If downloading or opening fails, please share the exact error message. This will help me narrow down the cause.