title: Visual Studio: Unable to add to the Web site... Unable to add file... Access is denied Error 550
body: <p>I am trying to publish my project from my development machine to the staging environment. I would right click the project in visual studio and click publish. Most of the files would publish just fine, but a few were giving me problems. In the output log, there were multiple error messages, all stating:</p>
  
  <p>Unable to add ‘XXX.ext’ to the Web site. Unable to add file ‘XXX.ext’. Access is denied (550)</p>
  
  <p>I'm following <a href="http://www.victorfeinman.com/2010/09/vs2008-publish-error-access-is-denied/" rel="noreferrer">this</a> : But I don't find the "Read-only" attribute checkbox...</p>
  
  <p>So have you any ideas ? Thanks in advance.</p>