How To Bulk Unblock Files

I think since XP SP2 days, a new security attribute was added to filessuch that files that came in by IM, email, or across the network were separately identified and blocked from being executed. To unblock,one need to go the Properties of the file and then click the Unblock button.

XP was rather lax in enforcing blocking. But Vista appears to block everything, including html files inside a zip file.

Each time I unzip the contents of a compressed file, I have to go andunblock each and every of its files. What is the method to Unblockmore than one file at a time? The moment I select two files, theUnblock button cannot be seen anymore, even if both individually is blocked. What is the command line version or Windows Powershell cmdlet to unblock a file?