If you have a legitimate license, follow these official steps to activate your copy of Windows Vista: : Click Start , right-click Computer , and select Properties . Scroll to the bottom and click Activate Windows .
Select your country and follow the automated prompts to receive a confirmation ID. : To attempt activation via the Command Prompt: Open Command Prompt as an Administrator .
To activate Windows Vista legitimately, you should use a valid product key or the built-in activation wizard. Using "free download" activators is , as these third-party tools often contain malware, violate Microsoft’s terms of service, and can compromise your system's security. Standard Activation Methods
Enter your (found on your COA sticker or in your purchase confirmation email).