: If the software is still installed on an old computer, your codes may be stored in the Windows Registry at: HKEY_LOCAL_MACHINE\SOFTWARE\Sony Creative Software\Vegas Pro\12.0 Look for an entry marked CurrentKey , which may contain the serial number followed by the activation key. Activation Process Lost Serial Number for VEGAS Pro 14
: Users are generally given the option to register "from another computer" or "online." Choosing the online method typically automates the request for an authentication code from the licensing servers. sony vegas pro 12 authentication code 64 bit
: If you can still open the program, go to Help > Deactivate the software on this PC . The window that pops up often displays your full serial number before you actually confirm deactivation. 3. Solving "Out of Authentication Codes" : If the software is still installed on