S3 unhelpful error "Access Denied" when using ACL: 'public-read'

• [ x] I’ve gone though Developer Guide and API reference
• [ x] I’ve checked AWS Forums and StackOverflow for answers
• [ x] I’ve searched for previous similar issues and didn’t find any solution

Describe the bug Setting ACL: 'public-read' when the bucket has “Block” permissions gives unhelpful error of “Access Denied”.

Is the issue in the browser/Node.js? Node.js

If on Node.js, are you running this on AWS Lambda? No.

To Reproduce (observed behavior) Set the bucket permissions so it has “Block All”

var uploadParams = {Bucket: 'example-bucket', Key: '/test', Body: '', ACL: 'public-read'};
var putObjectPromise = await s3.upload(uploadParams).promise();

Expected behavior The error message should provide a more helpful / relevant message such as “Invalid Parameters” or “Incompatible Parameters”.

[CyberCyclone]

Specifically, “ACL is not compatible with the buckets policy” would have helped me for this specific situation.

If the “Access Denied” error is thrown for any invalid params, then wouldn’t “Param Conflict” still be relevant as it would only be thrown when a param has a conflict with the bucket?

I haven’t looked specifically for where it’s throwing the error message so I’m not sure on it’s context.

[github-actions[bot]]

Greetings! We’re closing this issue because it has been open a long time and hasn’t been updated in a while and may not be getting the attention it deserves. We encourage you to check if this is still an issue in the latest release and if you find that this is still a problem, please feel free to comment or open a new issue.