Check the Citrix Receiver settings by:
  1. Hover over the Citrix Receiver task icon (bottom right in task bar)
User-added image
  1. Right click on it and click "Connection Center" from menu
  2. Select the server that is shown (ex. MEHOSTNETPS01) by clicking on it
  3. On the right, click preferences
  4. Under the File Access tab, click "Read and Write"
  5. Click apply and ok
  6. Click close
Now try the file copy again.