People in windows often move files across file systems: between the internal har...

Mikhail_Edoshin · on July 21, 2016

When this happens and the file has alternate streams you get a warning that some of the file's attributes cannot be copied.

banana_giraffe · on July 21, 2016

I've not seen that warning before. I just tested on a file I downloaded, which had the 'Zone.Identifier' stream. Using Explorer, I copied it to a FAT32 volume, then back to my NTFS drive. Sure enough, it lost the 'Zone.Identifier' stream, and there was no warning when I opened it.

This is on a fairly normal Windows 10 installation. YMMV on different versions, of course.

Mikhail_Edoshin · on July 28, 2016

I saw this warning on files copied from Mac OS X (when I transferred them further to a FAT32 filesystem). Maybe it depends on which stream it is. (Windows 8 Pro.)