Overview

Error 20000 is a common image upload issue that Amazon sellers encounter when their product listing image URLs cannot be accessed or downloaded by Amazon's systems. This error typically stems from problems like SSL certificate misconfigurations, inaccessible URLs, oversized files, or server throttling. Understanding the specific sub-causes behind this error can save sellers significant time when troubleshooting listing image problems.

Key Points / What Sellers Need to Know

• Error 20000 is a URL accessibility issue — Amazon's servers attempted to download your product image from the URL you provided, but the request either timed out or failed due to a connection problem.
• There are eight distinct sub-causes — Each variation of Error 20000 points to a different technical root cause, from SSL errors to HTTP status codes, and each has its own resolution path.
• SSL configuration is a frequent culprit — If your image hosting server has an improperly configured SSL certificate, Amazon cannot establish a secure connection to retrieve the image.
• Amazon recommends S3 hosting — Throughout the troubleshooting guidance, Amazon repeatedly suggests migrating image hosting to Amazon S3 for more reliable results.
• Images must be under 50 MB — Any image file exceeding this size limit will trigger a download failure, even if the URL is otherwise valid and accessible.

Common Causes and How to Resolve Them

The most frequently encountered variation of Error 20000 involves SSL certificate exceptions. When the image server hosting your product photos has outdated, expired, or misconfigured SSL certificates, Amazon's download system cannot complete a secure handshake and the request fails. Sellers should verify their SSL settings with their hosting provider or consider switching to Amazon S3, which handles SSL configuration automatically. Another common trigger is simply providing a malformed or broken URL — if the link does not point to a valid, publicly accessible image file, the download will fail. Sellers should always test their image URLs in a standard web browser before submitting them through Seller Central or a flat file upload.