Is it possible to choose Home over Pro?

TairikuOkami said:

Officially yes, unofficially it works just fine, but it is not completely legal of course.

Then you have answer your own question, yes ? And the matter would be up to you as to how you would want to deal with it

TairikuOkami said:

I did not upgrade anything, I had no OS there, I just bought an upgrade version, because it was cheaper.

Sounds like you are asking us for advice to do something illegal. How many DIFFERENT Windows 8/8.1 or Windows 7 licenses do you actually possess? I might be misunderstanding you, but it sounds like you bought the upgrade version of Windows 8.1 - did a clean install with it, without having a previous operating system (which is illegal). And now you want to use that same Windows 8.1 upgrade to clean install on a second computer and use that to upgrade the second computer to Windows 10 (which is illegal). Please forgive me if I misunderstand what you want to do.

In regards to your original question - you can only free upgrade to the same version you are coming from. Home to Home and Pro to Pro. Any other combination and Windows 10 won't activate.

NavyLCDR said:

Sounds like you are asking us for advice to do something illegal. How many DIFFERENT Windows 8/8.1 or Windows 7 licenses do you actually possess?

I don't think she asking us for illegal advise because its obvious she knows how to do that but rather I believe she asking can anything ( law wise ) bad happen to her, yes TairikuOkami ?

TairikuOkami said:

I have already 10 Pro activated on multiple computers, I just want 10 Home, lets not get offtopic.

You can only free upgrade to the same version you are coming from. Home to Home and Pro to Pro. Any other combination and Windows 10 won't activate. You'll have to purchase a Windows 10 Home license - or a Windows 7 Home or Windows 8 home license and then upgrade from the home version after installing it.

sn00ker said:

I don't think she asking us for illegal advise because its obvious she knows how to do that but rather I believe she asking can anything ( law wise ) bad happen to her, yes TairikuOkami ?

Well - law wise - it would have to be detected and prosecuted. In more practical terms, if you try to upgrade Windows 8.1 Pro to Windows 10 Home, the Windows 10 Home will not activate. She can enter a Windows 10 Home preview key - but that will only activate until Jan 2016. At least the was the activation expiration on my preview.

TairikuOkami said:

I have already 10 Pro activated on multiple computers, I just want 10 Home, lets not get offtopic.

You have a windows 10 pro upgrade disk since you said you bought a upgrade version ( didn't say which so I'm assuming ) because it was cheaper and now you want to know whether its possible to use that and install Windows 10 home, yes ? I would say it wouldn't work since those key are for the pro version. Every different windows versions must match to the license key they were build for .

TairikuOkami said:

All you are mentioning are vulnerabilities, just like without bitlocker, there is virtually no ransomware, since it mostly uses Windows built-in encryption, not to mention better performance, since less of realtime stuff.

Ransomware does not use bitlocker. Ransomware will infect you just as easily on Home. You're fooling yourself if you think you're safe because you're using home.