Hey. My PC had been activated for months, and then after a big update, Windows suddenly deactivated. I thought I had done something wrong or that Microsoft had revoked my license. After some research, I used kms full, where they explained that major updates can sometimes reset KMS activation https://allfunnypuns.com/upgrade-your-windows-now-top-reasons-why/ . The fix was simple - just running the activator again. I was relieved, but now I know to expect this whenever there’s a major system update.