From: address@is.invalid   
      
   Terry,   
      
   > Copying or moving any file or subfolder within it to or from anywhere   
   > else generates a pesky message that "files downloaded from the internet   
   > may be harmful...blah blah".   
      
   The root cause is AFIK that those files are marked (in an attached   
   "alternate data stream" (ADS) file) as being /potentially/ dangerous.   
      
   Maybe the below is be usefull to you :   
      
   https://thegeekpage.com/disable-blocking-of-downloading-files-in-windows-10/   
      
   Regards,   
   Rudy Wieser   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)