A visible file can still be online-only
File Explorer can show a name, thumbnail and size before the complete file has been downloaded. NativeActions needs the actual bytes on your computer to convert, compress or read the file.
Opening the context menu should not start a download. This keeps menu loading independent of cloud storage availability.
Make it available on your device
- Use your cloud provider’s option to download or keep the file on this device.
- Wait until the provider shows that the download is complete.
- Check that you can open the file normally, then run the NativeActions tool again.
If access is denied
Check that the source is readable and the folder allows new files. For a useful diagnostic, copy a downloaded file into a normal local folder that you own and try there.
Close applications holding the file open if they prevent access. You should not need to weaken system-wide security settings to process a normal local file.