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Windows 10 PC Build 10565+ Improves Device Activation

Windows Insider Hub  received a lot of feedback from Insiders that it should be easier to activate Windows 10 on devices when taking advantage of the free upgrade offer from genuine versions of Windows 7, Windows 8 or Windows 8.1.  With build 10565+ of the Windows 10 Insider Preview on PCs, if your device doesn’t automatically activate after installation, you can now enter the product key that was used to activate the prior version of Windows on the same device, by going to Settings > Update & Security > Activation, and selecting ‘Change Product Key’.  If you prefer a clean install of Windows 10 by booting from media, you can now also enter the product key from prior Windows versions on qualifying devices during setup.


The product key from the prior version of Windows must correspond to the equivalent edition of Windows 10 you’re trying to activate as determined by the like to like Edition matrix for Windows 10. For example, you cannot activate Windows 10 Pro on a device that ran Windows 7 Home edition by using the Windows 7 Home product key. 

If you have an OEM Windows 8 or Windows 8.1 device wherein the product key is provisioned into the device firmware by the OEM during manufacturing, Windows 10 Insider Preview Build 10565+ will automatically use the firmware product key upon rebooting after installation as long as the Windows 10 Edition matches the edition of Windows 8 that your device originally ran. 

Please note that with Windows 10, we introduced a new activation technology that uses “digital entitlements” (more information available at Activation in Windows 10) that  doesn’t require product keys, basically you no longer need to remember and enter product keys. Using product keys from prior Windows version to activate Windows 10 will activate your device using a digital entitlement. 

Finally, once you activate Windows 10 or Windows 10 Insider Preview (Build 10240 and higher) – you’ll be able to install public releases and Windows 10 Insider Preview builds of the same edition of Windows 10 seamlessly without the need to re-enter product keys. 

Microsoft also revealed that the latest Windows 10 Insider Preview supports nested virtualization, which lets you launch a virtual machine within another virtual machine -- yes, you can run Windows inside of Windows inside of Windows. The trick is a new feature that supports hardware-based virtualization within a primary virtual machine, providing for that one extra layer. There are limits, of course. 

VM inside of another VM

Features like dynamic memory won't work, and nesting currently requires an Intel processor with VT-x support (most chips from the past several years will do). So long as everything lines up, though, you too can create a hall of mirrors effect on your PC -- even if it doesn't serve much of a practical purpose for most people.

Read : How to enable nested virtualization

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