Quick answer
If an Instagram Story no longer downloads, first check whether it is still live or whether it was saved into a public Highlight.
Instagram Stories are temporary. Once they expire, the URL usually stops exposing a public media file unless the same content was kept in a public Highlight.
Why an expired Story fails
When the Story disappears, the URL can still look valid even though it no longer points to a usable public media file.
- Standard Stories are short-lived.
- A public Highlight can remain available.
- Private accounts block access too.
What to check before giving up
Try opening the Story in a browser. If it is gone, only a Highlight or a public repost of the same content may still work.
- Check whether the account is public.
- Look for the same video inside public Highlights.