A Microsoft file hosting and synchronization service.
Hi, I'm John! I will help you with this.
This error usually means OneDrive cannot confirm the account permission at that moment, or the file is being opened from a different account/session.
To help narrow down the issue:
- Are these files stored in your personal OneDrive, or were they shared with you by someone else?
- Does the same error happen when opening the file from https://onedrive.live.com?
- Are you using the same Microsoft account in OneDrive, Office, and the browser?