Have a win 10 pro retail, but lost the key, will MS email it to me

I have 4 win 10 pro PC, ok, so this is question about one of them.
I saw this comment here
How to Find Your Original Windows 10 Product Key - TechSpot

I didn't. I was quite SURPRISED how easy it was. My lappy, under warranty had go back, and they replaced the motherboard. It came back, with windows home. I had paid for the upgrade.With the machine still "fresh out of the box", nothing of mine was installed, went to the MS site, got online with a "chat agent", and after allowing him to remote in, I had pro back in about 20 minutes.After disconnecting, I dumped the remote program, cleaned out the registry and checked to make sure there wasn't anything left. But, the chat agent even sent me an email with the key for this pro update that will work with my laptop, just in case I need to install it again.

So was wondering if I opened up a chat with an agent would they remote into my system (they did that once before to reactivate it) and email me my retail win 10 pro key. I was thinking this board is getting old and someday may just fail.

Plus I see this too from a MS MVP, that even an OEM install can be moved once. Although I dont understand that procedure
exactly about signing into what where and noting what? Just is not clear, can some one explain the procedure better?

You can change your hardware and move your Windows 10 license by signing into the old install with your Microsoft account so that it's notes this in the activation status.Then on the new hardware sign in with the same Microsoft account and run the activation troubleshooter to move the license. Even if you originally had an OEM license that normally cannot change motherboards, the troubleshooter will make a one-time exception in this case. If not contact Microsoft support to ask for assistance.Greg CarmackWindows MVP

dalchina said:

If you wish to view your keys, please try using Showkeyplus (free by Superfly of this forum) - easy to find.
refers to logging in to your PC.See:
Link Microsoft Account to Windows 10 Digital License

That shows only the generic install key, ran lots of other supposed key finders.
a generic key wont activate win 10.
And YES, I log into this PC using my MS account and it is linked to me and when I checked it with the command, it comes back as a retail version.
Ok, lets say the MB dies, so it refuses to work anymore, what can I do, I have no key.? I thought I have to have a key to move the OS to new hardware?

I have not looked at your link yet, am I mixed up about this?

Does the online account simply know I have 4 windows 10 pro pc's so it activates 4 no matter what hardware (if they are all retail ) I need to know the steps, and I was earlier led to believe an OEM install of win 10 was locked to the PC, but it seems you can transfer it one time.

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This here says you can move it but you have to put in the product key, which one the generic key?
How to transfer a Windows 10 license to a new PC or hard drive | Windows Central

Honestly it makes no sense. If you have retail and its linked to your account online at MS, I woud think logically you would do this.
Login to MS account online, remove the dead PC.
Login to the new install of windows 10 on the new PC, then it automatically activates as MS knows you have a digital license to a retail copy, should not need any keys to activate.
Is this how it works?
Or am I totally wrong?
I keep seeing web sites saying got to type in the key. And I also hear MS is doing away with key.
I hope someone can tell me the truth.

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ok here are the relevant screens, from that pc.

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Since no one will say, I will soon have a chat with MS tech support like before and find out. I dont know why no one will say one way or the other, either they know and wont say, which not sure why, or they dont know anything. Another example of how I figure things out on my own. Sure would be dumb to have to pay up twice for the same retail license.

OK, I think I found it, yes you can, without having to type in any product keys or windows ID numbers or contact support people.
I think this is exactly as I thought before.
I will mark it solved, after a while, if I dont get any objections.
Thing is, there is a lot of old info about how things were done, and things change.

I am not sure how MS knows your old MB is dead or no longer used though, except that it is not online anymore?
And they dont mention removing the PC from your online account either, I suppose you dont do that.

How to re-activate Windows 10 after a hardware change | Windows Central

When you make significant hardware changes, such as replacing the motherboard or hard drive, Windows 10 won't be able to identify your computer correctly, and as a result, the operating system won't activate.

Previously, if your installation of Windows 10 lost its activation due to a hardware change, you would have to go through the tedious process of contacting Microsoft customer support to re-activate, which is not an ideal solution.

However, Microsoft is now simplifying the process. Beginning with the Windows 10 Anniversary Update, you can link your Microsoft account (MSA) with the Windows 10 digital license on your device. The new feature allows you to access the Activation Troubleshooter quickly to re-activate your free upgrade copy of Windows 10.

In this Windows 10 guide, we'll guide you through the process to link together your Microsoft Account and digital license, and the steps to use the Activation Troubleshooter to re-activate the operating system.