"Activate Windows" Watermark began showing up yesterday and activation troubleshooter does not work.

[Windows 10]

Beginning yesterday on Monday, a watermark has begun showing up on the bottom left corner of my pc telling me to activate windows. I have had Windows 10 since 2020, and have had my current pc since Christmas of that year, so Im not sure why this is happening now! When I do click activation in the 'Updates and Security' tab it for some reason buffers and takes a long time to show up. And when it does load it displays the following error code: 0xC004F012Now before anyone asks, yes I have tried using the Activation Troubleshooter. Only problem is that it doesn't work, and instead I get another er

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