Windows 11 Activate error following windows 11 update

[Windows Server]

I updated my Windows 11 yesterday and now I got an overlay telling me to ,activate windows,, but it was already activated - my PC is relatively new bought from a store and had Windows 11 OEM, can't find my activation code as bought the PC as ex display did not come with manualsHere some further info: My windows version is 24H2 (OS Build 26100.3194)Software licensing service version: 10.0.26100.3194Description: Windows(R) Operating System OEM_COA_NSLP channelProduct Key Channel: OEM:NONSLPNotification Reason: )xC004F200 (non-genuine)When I go to about Windows 11, it states that he product is l

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