{00000000-0000-0000-C000-000000000046}

IID_IUnknown

category: guid
normalized: 00000000-0000-0000-c000-000000000046
confirmed: 2026-06-13
lookups: 2
source: https://learn.microsoft.com/windows/win32/api/unknwn/nn-unknwn-iunknown

The COM interface identifier of IUnknown, the root interface of the entire Component Object Model.

value	name	category
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00	Compucon-Singer embroidery design file	file-signature
00000000-0000-0000-0000-000000000000	Nil UUID	uuid
00 00 00	High Efficiency Image Container (HEIC)	file-signature
0xC0000005	STATUS_ACCESS_VIOLATION	ntstatus
00 00 01 00	Windows icon\|printer spool file	file-signature