Did you recently or move to a new computer ?
: Activation often fails because of a firewall blocking the connection to the license server. Ensure that Trados Studio has permission to communicate through your network. License Reset Sdl trados studio 2014 activation code 151
If your firewall or a network error (like SSL/TLS channel issues) prevents online activation, use the method. Getting an activation code - Documentation Center Did you recently or move to a new computer
While you can continue using the software on a machine where it is already installed and active , you cannot move it to a new PC or reactivate it after a Windows upgrade. Sdl trados studio 2014 activation code 151