Right click on the Command Prompt shortcut and select Run As Administrator.
At the administrator command prompt, type in "-ipk " -ipk 00000-00000-00000-00000-00000 To activate windows after changing the key, run "-ato" Method 2: Using the Activation UI Alternatively, if you want to use a graphical interface, run the following at a command prompt as suggested by Dave in the comments.
Please contact your system administrator or retailer immediately to obtain a valid product key.
You may also contact Microsoft Corporation's Anti-Piracy Team by emailing [email protected] you think you have purchased pirated Microsoft software.
Do you need to change your product key so you can activate Windows Vista, Windows 7, Windows 8 or Windows 10?
If you're getting Windows 10 for the first time and a product key wasn't provided during the installation, or a generic key was used to upgrade, you'll need a new valid product key to activate the operating system.Windows 10 includes many ways to help you change your product key, and in this guide, we'll show you five of them.Windows 10 requires activation to verify you're running a genuine copy; a unique product key is used to ensure the a single licensed copy of Windows isn't being used on more than are allowed.Usually we do this in order to properly setup our new OS or in order to get rid of bloatware and fix system problems.It used to be a skill that only “tech-savvy geeks” had in their arsenal, but nowadays it is surprisingly simple to do.