Many users who have performed a clean install of Windows 10 build 10240 cannot activate it. That’s because Microsoft has disabled start online until the end of July 2015. If you are interested in triggering Windows 10 build 10240, here are a few simple steps for you to do that without any real use. Period cracks, hacks, or third-party software.

How to activate Windows 10 build 10240

  1. Open a Command prompt.
  2. Type the following command and press the Enter key:
     slmgr / ipk W269N-WFGWX-YVC9B-4J6C9-T83GX

    Wait for the text dialog to pop up where the key is installed.

  3. Now type the following command and press Enter.
     slmgr / skms

    Again, wait for the mailbox.

  4. Finally, enter the following command:
     slmgr / ato

    After you press the Enter key, Windows 10 build 10240 will be activated.

You are done.