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Build 25921 - Windows Activation GUI broken?
It would appear in Build 25921 that the GUI interface (Windows Settings) for Product Activation is broken. If you click on the link on the System -> About page, nothing happens. I was able to acti...
Since Server 2016 I am used to run "slui 3" from start -> execute since Server 2016 had a bug for the first few month similar to the one you describe here.
slmgr.vbs is my secondary way since slui cannot delete a key.