Microsoft deactivates all Windows 10 Insider Preview Pre-release product keys

Microsoft has deactivated all Windows 10 Insider Preview pre-release keys. All pre-release product keys published earlier for using with Windows 10 Insider preview builds have been deactivated and will no longer activate any Preview builds, including the latest 10240. This however, will not have any impact on devices which were activated earlier using those keys.

This means that the pre-release keys will not activate new installs but it also won’t deactivate already done existing installs.

Microsoft has clarified in the Answers Forum:

All pre-release product keys published earlier for builds of Windows 10 Insider Preview have been deactivated and will no longer activate any Preview builds, including Build 10240.  This will not impact any devices that were activated in the past using those product keys. We hope Insiders will continue to test Build 10240, which is only intended to be installed as an upgrade from a previously-activated version of Windows 10 Insider Preview – we do not support clean installs of Windows 10240.

How to tell if your Windows 10 installation is activated


Open Start > Settings > Update & Security > Activation.

There may be cases where although earlier installs were activated, after upgrade to 10240, some people started seeing ‘Activate Windows’ in build 10240.

Microsoft has cleared the air about such issues:

  • If you have Windows 10 build 10240 Home or Pro Edition and were activated on your earlier build prior to upgrading to build 10240, please wait a few days. A very small percentage of devices may experience a delay in activation. If your device does NOT activate after a few days of connectivity, you were likely not activated prior to upgrading to 10240.
  • If you have Windows 10 Enterprise Edition Build 10240, you’ll need to activate with your organization’s Volume License keys (KMS or MAK) or VL keys acquired via MSDN subscription. VL keys will be made available to customers soon as we prepare for the final release! Stay tuned.

It should be noted Windows 10 is intended to be installed on Genuine Windows devices, whether devices in the Windows Insider Program or those taking advantage of the free upgrade offer.

Vasudev G. is a Technology Enthusiast. He is a Windows Insider MVP and is committed to Microsoft technologies and products.


  1. aj

    so, does this mean if I’ve had preview installed and today downgraded to win 7 to upgrade again (many issues) it wont activate anymore? would have been nice some sort of pre warning i.e in 2 x days keys will be killed off

  2. vasudevG

    No those were for Insider Preview….On 29th Final ver will release & you can upgrade from Windows 7…& later can clean install too

  3. Arun Kumar

    If you downgrade and then again try to install one of the preview versions of Windows 10 (using ISO), you may not be able to activate it. But if you have reserved your copy of Windows 10 using Get Windows App on Win 8.1 o Win 7 SP1, you will get a notification when your upgrade is due and then you can upgrade to Windows 10.
    In short, if you have a preview installed right now, I won’t suggest going back to 8.1 or 7 as it will take a good time before you can upgrade to Windows 10 again.

  4. Luis Hirschberg

    I am Using windows 10 for months testing and upgrading from version to version.
    I have this activation problem now and it says i am not activated.
    why ? what can i do ??

  5. Leo

    Hi Mike. It worked for me. Thanks.

  6. MiTie

    Did you NOT read the article above????

  7. Vinícius Souza

    This worked for me also, Mike! Thanks! But, by the way, did you receive any build updates after activating or are still running 10130? I don’t know if I will get any update before tomorrow’s final release!

  8. juanitadscott0777

    Try microsoftkeystores

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