Cannot decrypt files when copying them to another location

[sunorain]

On my PC's HDD I have some files encrypted. Used "folder encryption" that is
in one of folder properties selected "Encrypt data..."

Folder is shown in green in explorer respectively.

In the beginning, when I copied any files from this folder to another
location (e.g. USB HDD) files became automatically decrypted, i.e. I could
read those files from USB HDD on any other PC.

But now something changed. Though I did not make any changes to security or
file system settings, files copied from encrypted folder to USB HDD stay
encrypted. That is - I can read them only on PC where I copied them to USB
HDD. On other PCs where I connect USB HDD files are not accessible.

How can I change it back? I need files copied from encrypted folder to USB
HDD to decrypt automatically, because it's backup procedure and I need them
accessible on any other PC. How can I stop encryption attribute to be copied
together with file?

 

[sunorain]

Thank you for advice, Mike. The point is also that "other" PC is laptop, not
so powerful as 1st desktop, so I'm trying not to use there encryption at all,
to avoid system overload.

Old Rookie also mentioned problem can be solved by xcopy /g but I'm still
getting files encrypted when they go to NTFS.
Still I'm trying to find what could make such drastic change when I copied
earlier by "normal" file manager.

 

[sunorain]

Vista with latest updates on desktop.
XP with latest updates on laptop.
But latter doesn't really matter, since I copy files from desktop to USB HDD
connected to this desktop.
Yes, I know it's better to decrypt, the point is only that earlier
decryption was done on the fly, automatically (and I wrongfully thought it's
normal and standard), now system behaves as it "should" and I cannot find out
how did I got it to come back to status quo ante.