Windows 10: Will Windows 10 Pro License Key Transfer to new Owner?

I have system that I upgraded from Windows 10 Home to Windows 10 Pro through the Microsoft OS upgrade process. (The Home license was Retail and not OEM.) So I believe the Pro license is associated to my Microsoft account. I want to sell the system and transfer all rights to this Pro OS to the new user. I've identified the Pro key using a utility so I can provide that to the new owner. My question is, will this work and will it be legitimate. I'm very conscious of this last question.


Thanks in advance for your help.

:)

 

Windows 10 Pro license transfer to new owner

I have a Samsung laptop with OEM Windows 10 Home installed originally. I upgraded via MS Store to Windows 10 Pro on this same PC. I used my Outlook.com ID for install/managing the PC.

I now want to sell the PC. It will be reset to factory, which is Windows 10 Home. How can the Win10 Pro upgrade be provided to the new PC owner, or will the upgrade automatically be downloaded/applied to the PC when the new owner connects to the Internet?

I am removing the device from my Outlook (Microsoft) account. So, it should no longer be tied to me or my account. I want the upgrade license to stay with the PC asset, as my new PC has Pro license.

Thank you

 

Moving a Windows 10 Pro license to a new computer

Use chat support to reactivate it using the Windows 10 Pro product key.

Activate Your Windows 10 License via Microsoft Chat Support

Learn more about transferring your license:

• How to Transfer your Windows 10 License to a New Computer

 

Transfer Office 365 license that came with machine to new owner

In March 2019 I bought a Trekstor Surfbook that came with a 2 year license for Office 365. This license is listed in my Microsoft account as being valid until March 2021.
Now I am selling the machine and I would like to transfer the Office 365 license to the new owner.
Can someone enlighten me how to achieve this?
Thanks a lot