Windows activation on two PCs allowed?

I got a Windows key and I also get a laptop tomorrow.

Since I have already used my Windows key for my PC, can I also use the Windows key for my laptop (at the same time)?

Respectively. Would that be allowed, or would I have to get a second key, or depending decide on which device I want to let the Windows akitviert?

The license is usually for a single machine, unless there's something else. I think it's unlikely that it works.

👍👍👍

The key / activation code is only valid for one computer. So unfortunately that will not be possible.
Buy a new one or upgrade to Linux (it's free but a bit more complicated). However, most devices already have a key or Windows is already installed.

That certainly is not possible. You can also buy licenses for 2 or more computers. Cost then, but then a bit more, but not twice. But what is the theater supposed to do? It's not that bad. I'm building part-time PCs together. And in almost all I install Windows on it. Just 4 days ago I bought an OEM Windows 10 Pro version for 5.95 euro at rakuten.de and Windows can be activated properly. There are many who rob the operating systems and Word programs, everything is a fake. It's not like that. I have already bought at least 30x Windows and about 20 MS Word there, and there have never been any problems with the activation. I realize, of course, that those who have paid 100 euro or more are eaten, but there they are themselves guilty. So, save the theater, invest the 6 euro and you have a secure second Windows 10.