Run the command slmgr /ato to trigger the activation process.
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 . windows-vista-genuine-activator-free-download
: If online activation fails, you can use the automated phone system: Run the command slmgr /ato to trigger the activation process