title: The requested operation cannot be performed on a file with a user-mapped section open
body: <p>Whenever I tried to copy 4 files into my bin folder, after stopping the main service, I am getting an error with one file (TexteDll). The error is:</p>
  
  <pre><code>Cannot copy TexteDll: The requested operation cannot be performed on a file 
  with a user-mapped section open
  </code></pre>
  
  <p>It may be due to some system locking. Or perhaps another process is using this DLL. When I googled, I found that rebooting the system may resolve this.</p>
  
  <p>Can anybody suggest a cause or solution for this? I inspected the properties of TexteDll (general, version, security, etc). Everything appears normal.</p>