Windows 11 Key Viewer [upd] Access
Tools like ProduKey or ShowKeyPlus provide a user-friendly interface. These are the most popular "viewers" because they can distinguish between the installed "generic" key and the original "OEM" key stored in the hardware.
Crucially, there are two types of keys:
These tools offer a Graphical User Interface (GUI) and are popular for ease of use. windows 11 key viewer