kms license expiring - what to do and what will happen?

A couple of weeks ago, my laptop (windows 10 professional) started to give me a pop-up message that I have not seen in the 6 months that I've had it. "Your Windows License is Expiring Soon".

I did some digging around using slmgr and apparently the license on this Windows 10 expires in 2 days on April 20th. Now I have no experience with anything like this so I don't know what it means, what will happen on the 20th or what to do about it.

Under the activation tab in settings, it says, "Windows is activated using your organization's activation service". I bought this laptop used back in October of last year (2016) and it has been great. So over the last week or so, I guess I have figured out that this laptop must have a KMS license that I don't know anything about. I checked around online using Google, etc...and all I can find is something about a slmgr rearm count which I looked at and mine said 1001 so I tried that, and it dropped down to 1000 but nothing changed and I still get the warning and the date of the 20th still shows up.

So my questions are: 1. What can I or should I do about this? and 2. What will happen on the 20th when it expires?

Any thoughts or suggestions would be appreciated.

If the computer ever had legitimately licensed Windows 10 Pro on it, it should have a digital license stored on MS Activation Servers. To find out, you can change the product key to the generic Windows 10 Pro product key:
VK7JG-NPHTM-C97JM-9MPGT-3V66T

If there is not a digital license for Windows 10 Pro stored on MS activation servers for that computer, it will just deactivate Windows, which is going to happen anyway once your current illegitimate activation expires.

Microsoft is still activating Windows 10 using Windows 7 and 8 product keys, so if the computer has a COA sticker with a Windows 7 Pro Product Key printed on it, you should be able to change the product key to that one and it will activate.

Thanks for the replies. There is no sticker anywhere on the PC. I may try some of the things you all suggested, but what I really am curious about (and apparently will find out in 24 hours), is what are the significant/serious consequences of using the PC after tomorrow if nothing else changes and I can't fix the problem and/or change the status? If I have to, I guess I can start from scratch with Linux, but I have spent the last 6 months getting this computer the way I want it and running great so that would kinda suck, especially since I just waited hours to get this latest creators update (1703) installed the other day.

Un-activated, Windows has a watermark to say so, you will be nagged to activate and various Personalization settings are disabled, notably the ability to set a Desktop wallpaper. It is a violation of the EULA to continue using an un-activated Windows, but so was using this apparently illegal copy of Windows in the first place.

Is there a sticker on the Laptop that says What Make and Model it is ?? Just that info would narrow it down to if it came with Win 7, 8.* or 10 originally. Info on the CPU, GPU etc, would help even more.

Bat 1 said:

Is there a sticker on the Laptop that says What Make and Model it is ?? Just that info would narrow it down to if it came with Win 7, 8.* or 10 originally. Info on the CPU, GPU etc, would help even more.

What good would that information be? Let's say that make and model came with Windows 7 Home Premium. OK, now what? How would that info help the OP activate any Windows, including the Windows 7 Home Premium that it came with without a valid product key?