Windows 10: Upgrading Windows 10 Home to PRO with Windows 7 Ultimate key

Hello

Few years ago I've successfully upgraded my laptop with Windows 10 Home to Windows 10 PRO with my Windows 7 Ultimate Retail key. This laptop is now old and I'm not using it. I've found out that I can transfer my Windows 10 PRO license to my new laptop or PC through my Microsoft Account. But I was wondering if I can also do something easier and faster... Lets assume that I will buy a laptop with Windows 10 Home on it. Would it be possible to just once again use my Windows 7 Ultimate Retail key(same one that was used on the old laptop) on it to upgrade it to Windows 10 PRO? It's aretail key so theoretically I can reinstall it many times(on one PC/Laptop at a time ofcourse) but I'm not sure if it applies to upgrading Windows 10 Home to PRO?

Thank you in advance for you help

submitted by /u/Mattmatt452
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:)

 

Will a Windows 7 Ultimate key activate Windows 7 Pro?

no TRWOV u can't use Ultimate key on Pro but u can download a free Windows 7, if that's the problem.

Windows 7 SP1 ISO from Microsoft's Official Distributer:

Windows 7 Ultimate 32bit

Windows 7 Ultimate 64bit

 

Will a Windows 7 Ultimate key activate Windows 7 Pro?

No - Typically as far as I know, a Windows 7 Ultimate key will unlock Windows 7 Ultimate.

The thing is basically what is on the INSTALLATION disc is usually exactly the same no matter what version you buy, ALL the potential content is already on the disc, and it is the Product Key itself that tells the installer what options to install/how to install them, so that you land up with your specific product.

Take an Ultimate DVD, install , but enter a windows Home key, and you will most likely get a Home install.

... or am I 'trippin? Pro's weigh in?

 

Will a Windows 7 Ultimate key activate Windows 7 Pro?

you can upgrade, but not downgrade win 7.


so you can install home premium with no key, then slap a HP, pro, or ultimate key in later to 'upgrade' - you just cant install ultimate, and downgrade later.