[crtasm]

>A Global Device ID (GDID) is a permanent, unique digital fingerprint that Microsoft automatically assigns to your computer when you install Windows or sign into a Microsoft account.

Note the "or"

I own a Windows 10 machine which has never signed into a Microsoft account. It still has a GDID in the registry.

[1970-01-01]

What's your point? There are thousands of GUIDs in the registry.

[ranger_danger]

GUID != GDID