Aside from temporarily disabling anti-virus, be sure to use the same email address you used when your product was initially registered. The emall address is paired to the your product's serial code.
You can email Magix customer service at: infoservice@magix.net .

btw, for future threads on the this forum, please include what version and build of Sound Forge you are using (for instance, Sound Forge Pro-15 build 64). You should peruse the 'Sticky' at the head for the main Sound Forge forum page... last but not least.. welcome to the Magix Sound Forge users community @Paul-Hartzell.

Hi! an error -14 in the magix installers means that somewhere there is a mix-up in the registration/activation...typically what happens is that the user is entering a valid serial number, but they made a typo on their email address...or it could mean that the serial number is valid, but the wrong program was downloaded: for example, the serial number is valid, but it is a serial number for version 14, when the version the customer downloaded (for whatever reason) is 15, or the number was intended for the Audio Studio version, but it is being entered on the Pro version. all of those details are important and are not interchangeable. i hope this helps!