Temporarily disable your anti-virus software.
Right-click the anti-virus icon located in the bottom-right of your screen.
Click "Disable."
Double-click the Rosetta Stone application icon from your desktop to launch the program.
Adjust the configuration levels of your anti-virus software so that Rosetta Stone is no longer blocked. Double-click the anti-virus application icon from the desktop. Click "Settings" and then "Firewall" and then "Add" an exception to allow Rosetta Stone.