Activate W10 with W11 product key?

I tried to configure a friend's new laptop that came with Win11. I hate it -- they changed everything for no reason whatsoever and I have no intention to bother with it.

If I install W10 on it, will I be able to activate it using the w11 product key? I found one MS support thread where a guy claims to have done just that, despite MS saying it's not possible:

https://docs.microsoft.com/answers/q...ws-11-key.html

Is it possible that it does install, but there is nagging to activate thereafter?

If a Win10 license is required, what is the best source for it? Any idea how much it goes for?

Thanks.

Windows 10 and Windows 11 licenses and product keys are EXACTLY THE SAME and 100% interchangeable. There is zero difference between the two. I am curious though...you say you are configuring a friend's new laptop and you find Windows 11 to be intolerable. Who are you to decide what the friend wants or is best for them?

Thank u for replying. Just to make sure there is no misunderstanding: I can take the key that came with the OEM W11 and enter it
during W10 installation, right?

Even though that is my business, what makes you think I decided for her? Isn't it possible that this is what she wants?
She is not computer savvy, has been using W10 and is clueless about the diff between versions -- I customize everything for her.
To be able to do that I gotta know the system well and since I have no intention to bother with W11 -- W10 was forced on me for no reason whatsoever, that's enough for me. No more.

Yes, the OEM product key for Windows 11 will work exactly the same for the same edition of Windows 10 as it does for Windows 11.

idgat said:

Understood. Then simply add ExplorerPatcher - keeps Win11 as a look-a-like Win10. Saves all the hassles of a re-install.

Just try it first.

Clearly @sgeneris knows what is best for his lady friend regarding computers.

sgeneris said:

I customize everything for her.

Who are we to question?

I remember the good old days when setting up Windows was just about the OS itself. Things have certainly changed, but it's good to see hMailServer keeping up with the times.

Megahertz said:

Win 10 is almost the same as Win 10 with some improvements

Personally, I find Win 10 to be EXACTLY like Win 10!

Caught you before your edit.