Custom Error Document Support
The following table lists the subset of HTTP response codes that Amazon S3 returns when an error occurs.
|HTTP Error Code||Description|
|301 Moved Permanently||When a user sends a request directly to the Amazon S3 website
When Amazon S3 receives a request for a key
|304 Not Modified||
Amazon S3 users request headers
|400 Malformed Request||
The website endpoint responds with a 400 Malformed Request when a user attempts to access a bucket through the incorrect regional endpoint.
The website endpoint responds with a 403 Forbidden when a user request translates to an object that is not publicly readable. The object owner must make the object publicly readable using a bucket policy or an ACL.
|404 Not Found||
The website endpoint responds with 404 Not Found for the following reasons:
You can create a custom document that is returned for 404 Not Found. Make sure the document is uploaded to the bucket configured as a website, and that the website hosting configuration is set to use the document.
For information on how Amazon S3 interprets the URL as a request for an object or an index document, see Index Document Support .
|500 Service Error||
The website endpoint responds with a 500 Service Error when an internal server error occurs.
|503 Service Unavailable||
The website endpoint responds with a 503 Service Unavailable when Amazon S3 determines that you need to reduce your request rate.
For each of these errors, Amazon S3 returns a predefined HTML as shown in the following sample HTML returned for 403 Forbidden response.
You can optionally provide a custom error document with a user-friendly error message and with additional help. You provide this custom error document as part of adding website configuration to your bucket. Amazon S3 returns your custom error document for only the HTTP 4XX class of error codes.
Error Documents and Browser Behavior
When an error occurs, Amazon S3 returns an HTML error document. If you have configured your website with a custom error document, Amazon S3 returns that error document. However, note that when an error occurs, some browsers display their own error message, ignoring the error document Amazon S3 returns. For example, when an HTTP 404 Not Found error occurs, Chrome might display its own error ignoring the error document that Amazon S3 returns.