A Microsoft file hosting and synchronization service.
Hi MisterLavender,
“Available offline” means the file is currently downloaded and accessible without an internet connection. However, OneDrive may remove the local copy later if your device needs to free up space. If that happens, the file will be re-downloaded when you open it again.
“Always kept on this device” means the file is permanently stored on your device. OneDrive won’t remove it, even if disk space is low. This ensures the file is always accessible offline, no matter what.
So, the key difference is that “available offline” is temporary and managed by OneDrive, while “always kept” is a manual setting that guarantees the file stays local.
Hope that helps clarify things.