When a Windows system configured to be a KMS client checks in with the configured KMS server, it receives a temporary license to run Windows on that system for 180 days. Instead, they deploy their own internal activation server, called a KMS server, and then they configure their deployed Windows systems to check in with that activation server in order to activate. Basically, the way it works is that large corporations have the option activating Windows in a way that doesn't involve using product keys at all. In terms of why I think that, the organizational activation service is called KMS (Key Management System) activation. My guess is that if you went to, entered your Service Tag, and looked up the Original System Configuration, you will find that it originally shipped with Linux or a previous version of Windows and therefore isn't licensed for Windows 10.
Fabroneyou have a Windows 10 Home system that says it's activated by 'your organization's activation service'? I'll provide the details below, but the short answer is that it sounds like whoever sold you that system put a hacked/pirated copy of Windows 10 on it.
