title: Can't edit or delete xlam add-in
body: <p>I have an xlam that is shared with me and several coworkers. I wanted to edit or even just delete the add-in. But when I go to save the edits it reads "xxx.xlam is read-only." I unchecked the read-only box in the properties box, but it still gives me the same message.  </p>
  
  <p>When I go to delete the whole file it reads "The action can't be complete because the file is open in Microsoft Excel" I am the only here so I know no other coworker has it open.</p>
  
  <p>Thank you.</p>