Now type following command with your new product key.Ĭscript “%SystemRoot%\System32\slmgr.vbs –ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX” Run Command Prompt as Administrator (Elevated Command Prompt)Ģ. It displays Windows Activation wizard, where you can type the new product key and then click on Next to change and activate your Windows operating system.ġ. On Windows Vista, you may need to provide administrator password or confirmation on UAC Prompt.ģ. Under Windows activation, click on Change Product Key (Already activated)or Click here to activate Windows now (Not activated).
Right click on Computer and choose Properties, and look the bottom of System Properties dialog box.Ģ. To change product key or re-activate your Windows that already installed in the system, just follow these simple steps.ġ. To know more about Upgrade paths of Windows 7, Read Here. Sometimes we need to change or re-enter the product keys in Windows 7, Windows Vista or their Server variants to solve Windows Activation problems or to activate your Windows (30 Day Trial) after buying a genuine license or to upgrade Windows from one edition to another one.
