Sony Vegas Pro 9 Authentication Code 〈Limited Time〉

: Right-click the Vegas Pro 9 icon and select Run as Administrator before entering your codes. The Risks of Keygenerators (Keygens)

This led to the proliferation of "Keygens" (Key Generators). A keygen is a program designed to reverse engineer the mathematical algorithm Sony used to generate valid serial numbers and authentication codes. A typical "crack" workflow, as documented extensively on forums in 2010, looked like this: sony vegas pro 9 authentication code