Windows 10: Transfer Windows 10 retail licenses between machines upgraded Win 8 Pro & Win 10

I currently have two machines running with different editions of Windows 10.Machine 1 uses an upgraded Windows 8 Pro retail license, machine 2 a Windows 10 non-Pro retail license.As more and more hardware components of machine 1 are dying, I plan to replace it by a newer machine machine 3.The setup I would like to accomplish is:- retire machine 1- run machine 2 with the upgraded Windows 10 Pro license- run machine 3 with the Windows 10 non-Pro retail licenseNext steps would be:- deactivate the activation of Windows on machine 1.- deactivate the activation on machine 2 and reactivate it w

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Windows 10 upgrade license

The interesting question is that: the upgrade takes place before 29 of July. If I upgrade the PC (change the MB), and I transfer the Win 8.1 license to this new PC (cause 8.1 is retail FPP), will I be able to upgrade to Windows 10 for free? Or a upgrade license must be bought?

 

Transferring a Win 10 to a new PC, with a free upgrade license


If you upgrade a transferable retail channel license, Windows 10 will inherit the retail channel transferability. If you upgrade an OEM license, it will be tied to the OEM machine the license originally came with. You get what you paid for.

From an admin command prompt the system license manager script (*Start+x, A, yes, type slmgr -dlv, enter) will tell you your license channel. Microsoft has said that the license type will be preserved on upgrade.

If you were lucky enough to upgrade your Win7 OEM PC to a Win 8 Pro license cheaply, you have a retail license, which is yours with a Win10 upgrade, a full retail license.

Solved Win 8 Pro u/g allowed transferability, will Win 10 u/g change this? - Windows 10 Forums

 

Transferring a Win 10 to a new PC, with a free upgrade license

I like that answer. I'd like it even better if it came from an authorized post by a Microsoft employee rather than an MVP, but it's probably accurate.

It would have been good if there had been a description of the mechanics of the transfer, but I'll continue to wait for those. (If it requires installing the OS that qualified the upgrade and then performing the upgrade, it'd be OK, but awkward.)

It's pretty much academic for me at the moment. My latest PC build was last December. Any new one would be for someone else, and he/she would receive a retail or System Builder copy of the OS of choice.

It's likely that I'll never wish to transfer Windows to new hardware again, but I'd like to know the rules, just in case.