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Troubleshooting Secure Downloads
Fix common download errors in secure file sharing and finish the transfer.
Most download problems come from browser protections, expired links, or unstable networks.
These checks resolve the majority of issues quickly.
CORS and blocked requests
Ensure storage CORS allows GET and HEAD and exposes the ETag header.
Verify the content domain matches the presigned URL and the request origin.
Expired or burned links
If the metadata fetch returns 404, the link is gone by design.
Generate a new share instead of trying to revive an expired link.
Large files and unstable networks
Pause heavy network activity and retry the download if it stalls.
Use the resume feature so you do not restart from zero after a refresh.
Browser limits
Make sure the device has enough disk space for the final file.
Disable aggressive privacy extensions that block large binary downloads.