

Wait for a couple of minutes and reboot your PC. In the command prompt window type the command “ slmgr.vbs –rearm” and execute it by pressing the Enter key.

This will open the Windows command prompt with administrator privileges.Ģ. Right-click on the Start menu button and select Command Prompt(Admin). From the left pane select Activation and click on the Activate button.Īnother way out is to force Windows 10 to activate. You can do this by opening the Settings windows from the Start menu and selecting the Update & security section. If you upgraded to Windows 10 from a legally activated copy of Windows 7 or 8.1, try again to activate Windows 10 a couple hours later. A lot of users experienced error code 0xc004c003 and also mentioned that they were successful activating the Windows when tried after a while. Windows 10 activation servers might get overloaded and block some connections for while due to the high number of Windows 7 and 8.1 users that are upgrading to Windows 10.
