Overview

Amazon sellers occasionally encounter error 300404 when they try to attach images or videos to a product detail page. The code signals that Amazon’s backend could not retrieve the media file because the supplied URL returned a 404 “not found” response. Resolving the issue quickly is essential to keep listings complete and avoid delays in going live.

Key Points

• Error definition — Amazon attempts to download the media from the URL you entered; a 404 response means the file is missing at that address.
• Automatic retries — Amazon’s system will make several fetch attempts before flagging the error, but repeated 404s trigger the failure notice.
• Typical remedy — Removing the faulty URL, confirming the file is reachable, and re‑adding a valid link usually clears the problem.
• Preventive habit — Verifying every external media URL in a browser and checking server accessibility can stop the error before it appears.
• Impact on listings — Missing images or videos can lower conversion rates and hurt organic search placement, especially for large inventories.

How to Resolve Error 300404

1. Locate the affected listing — Open Seller Central, go to Inventory → Manage Inventory, and use the error notification to identify the SKU or ASIN with the broken media link. Example: A seller sees error 300404 on SKU B07XYZ1234 while updating a summer‑dress listing.
2. Delete the problematic URL — In the product edit screen, find the media section, select the image or video entry that generated the error, and click Remove or clear the URL field. Example: The seller removes the URL “https://oldhost.com/images/dress1.jpg” that no longer points to a file.
3. Validate the correct URL — Paste the intended media link into a new browser tab. The file must load without requiring login, redirects, or error pages. Example: Opening “https://newhost.com/media/dress1.jpg” displays the dress image instantly, confirming accessibility.