How can I view the installed activation keys on my Windows device?
You can read out your Windows keys with the help of ShowKeyPlus. The "Installed Keys" entry shows the key used to activate Windows.
Depending on the actual Windows version used (home / pro / enterprise), the BIOS key and the activated key may not always match. The BIOS key may not be displayed because a system builder CoA (for Retail: Mother Board) is used.