I have a number of files for which I see the message (in the file properties dialog, general tab) Security: This file came from another computer and might be blocked to help protect this computer. There is an Unblock button. I click on that, then Apply then OK. Then I reopen the file properties dialog. The file is still blocked.
I used nirsoft.net Alternate Stream view. This confirms that these problematic files have the :Zone.Identifier:$DATA stream. I can't delete this stream using AlternateStreamView.
The user I am logged in as is the file owner, and file owner has permissions for full control. But not "special permissions" - I'm not sure what those are or how to assign them, if needed.
These are in a Dropbox folder, but even when I quit dropbox, the problem persists.
This is Windows 7 Pro.
Any ideas - how can I unblock these files and make it stick?