title: Access an S3 bucket created by another user
body: <p>Here's my <strong>scenario</strong>: I'm <em>user Marius</em>, and all I want to do is to:</p>
  
  <ol>
  <li>access an <strong>S3 bucket</strong> created by <em>user Admin</em>,</li>
  <li>upload some images there, </li>
  <li>access them, via CloudFront, later on.</li>
  </ol>
  
  <p>Here's a summary of my attempts so far:</p>
  
  <ol>
  <li><p><em>User Admin</em>, using the <strong>AWS Management Console</strong> (AWS MC), grants <code>List</code>, <code>Update/Delete</code>, <code>View Permissions</code> permissions for his already created S3 bucket to <em>User Marius</em>.<br>
  To grant permissions we used <a href="https://stackoverflow.com/a/6608941/341929">this approach</a>, using for <code>grantee</code> first the users email; then the AWS canonical userid, both of them falling back to the username.</p></li>
  <li><p><em>User Marius</em> uses CyberDuck to successfully connect to S3, using <code>Access Key ID</code> / <code>Secret Access Key</code>, but the root folder is empty. Accessing S3 through AWS MC doesn't help either:</p>
  
  <blockquote>
    <p>To get started using Amazon S3, create a bucket to hold your objects.</p>
  </blockquote></li>
  </ol>
  
  <p>The attempt to create a new bucket with the same name -- <em>as per <a href="https://stackoverflow.com/a/8927018/341929">Tom Andersen's comment</a> below</em> -- fails: the bucket already exists.</p>
  
  <p><img src="https://i.stack.imgur.com/B16Y7.png" alt="Create bucket failed"></p>
  
  <p>What do I have to do to access that S3 bucket and modify it's contents?</p>