If you have installed Windows 10 Insider Preview Build 10240 then check Start > Settings > Update & Security > Activation , to see if its activated. If its is then you’ll get to see this:
But some users who have installed Windows 10 Insider Preview Build 10240 are seeing Activate Windows as their Windows is not activated. Microsoft has posted in the Answers Forum some more details about the same. So what to do if one is getting ‘Activate Windows’
- If one is getting ‘Activate Windows’ on Windows 10 Enterprise build 10240, then one has to activate with their organization’s Volume License keys (KMS or MAK) or VL keys acquired via MSDN. VL keys will be made available to customers by Microsoft as it prepares for final release.
- If one is having Windows 10 Build 10240 Home or Pro Edition and had activated their earlier build before upgrading to 10240, Microsoft has requested to wait for few days. A very small percentage of devices might experience a delay in activation. And if ones device does not activate even after a few days of connectivity, then its likely that it was not activated prior to upgrading to 10240.
It has to be noted that Windows 10 is to be installed on Genuine Windows devices, whether the devices in the Windows Insider program or taking advantage of the free upgrade offer. Also pre-release keys will not activate new installs.
If you installed the Enterprise Edition, but are not part of an organization with a Volume License, you will not be able to activate. Please revert Windows 7 or 8.1, and upgrade to Windows after it’s released on July 29 by reserving your copy of Windows 10.
If your device has been connected for a few days and is still showing the watermark, you probably didn’t activate your previous version before upgrading to Build 10240. Please revert Windows 7 or 8.1, and upgrade to Windows 10 after it’s released on July 29 by reserving your free copy of Windows 10.