Well i still don't have any help. So can someone answer this question at least. I can't see the windows 8.1 update in the store. Is it beacuse i activated with KMS and then installed the WMC.
Why not? Bill Gates is doing crimes against humanity far forse than any software pirating together combined. Screw 'em!
Spoiler Mr Billy G disapproves. The discussion is about how OP can procure 8.1, not about the pros and cons of piracy or its effectiveness as a revenge tactic against multibillionaires. @OP: What's so hard to understand? You want an activator. You're asking in the wrong place because you won't find it here. Download an ISO from the repo, buy an original key and activate with it. Don't be a cheapo.
If you have already a Windows 8 Pro with WMC then install update kb2871389 from windows update. After install, restart then check the store.