In Windows XP and Vista, when you download Embird installation .exe file from the internet, or another computer, it puts a "block" file security attribute on it. This tutorial explains how to unblock the installation file.
1 - Launch Windows Explorer and browse to the folder with installation file.
2 - Right click the installation file (Picture No.1).
1. Right click the installation file
3 - A popup menu will appear (Picture No. 2). Select "Properties" command.
2. Select "Properties" command
4 - A dialog box with file properties will appear (Picture No. 3). Click "Unblock" button and then "OK" button to confirm.
3. Click "Unblock", then "OK"