For example, the solution to severalDevice Manager error codesincludes removing specificregistry valuesfromregistry keysnamed after a gadget’s GUID.
This is not an exhaustive list, and not all Windows versions use every GUID in this table.
Several less common system-defined unit classes exist.
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Also, devices can generate unique classes based on variables, which makes it impossible to list them all.
What Are GUIDs?
Windows creates the GUID, written inhexas a 128-bit alphanumeric string, for each piece of hardware.