Solved How can I check if my old W7 license key is valid and can be used for W11?

So basically I want to use my W7 key to activate W11 as I understood that is possible.
How can I check if my key is valid and if it can be used for it before installation?
Thanks!

Start a VM and install Windows 7 and use hte key.

Or, you could try using SuperFly's ShowKey app:

johnlgalt said:

Start a VM and install Windows 7 and use hte key.

Or, you could try using SuperFly's ShowKey app:

ShowKeyPlus - Windows 10 Help Forums

I have converted the vbs to .Net for speed and backward compatibility with Win 8.0. Should be fine on WTP, but please report any bugs (This is a quite

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However, be advised that the activation of the virtual machine could use up the number of activations allowed with that specific Windows 7 product key and when you then attempt to activate Windows on the physical computer, you will find that the Windows 7 product key has been blocked.

Windows 7 and Windows 8 product keys (even retail product keys) have a limited number of activations allowed in a certain period of time. Once you exceed that limited number of activations, the product key gets blocked for online activations by Microsoft. Once that happens, if you want to use the product key you have to use phone in activation. The problem with phone in activation, though, is that it only works with the version of Windows the product key is for, Windows 7 or Windows 8. You cannot activate Windows 10 or 11 over the phone with a Windows 7 or 8 product key - at least not via the normal phone activation line. Microsoft customer support might be able to do it if you get to talk to the right living and breathing person.

If you discover that you have a Windows 7 or 8 product key that has been blocked from online activation what you can do is install the original OS (Windows 7 or 8) on the computer that you ultimately want Windows 10 or 11 on. Activate the Windows 7 or 8 via normal phone activation, then upgrade it in place to Windows 10 or 11. You don't need to worry about hardware drivers or updates on the original Windows 7 or 8, you are only going to use it as an upgrade path. Once you get a successful upgrade to Windows 10 or 11 and acquire the digital license for that computer, then you can turn around and do a clean install of Windows 10 or 11 without a product key and it will activate from the digital license.

In the end it wasn’t a valid license key. Settled with getting another one. Thanks!

I used an upgrade Win 7 Home Premium licence collecting dust to install Win 10. At first, it didn't take it - had to do the phone activation. Then i used a modified Win 11 on a flash drive to install Win 11 in a VB VM. Shows activated finally after jumping through some hoops!