Editing Universally unique identifier (section)

=== Remoting ===

There are several flavors of GUIDs used in Microsoft's [[Component Object Model]] (COM):

* {{mono|IID}} – interface identifier; (The ones that are registered on a system are stored in the [[Windows Registry]] at {{code|[HKEY_CLASSES_ROOT\Interface]}}<ref>{{cite web|url=https://msdn.microsoft.com/en-us/library/windows/desktop/ms688484(v=vs.85).aspx|title=Interface Pointers and Interfaces|website=Windows Dev Center - Desktop app technologies|publisher=[[Microsoft]]|access-date=15 December 2015|quote=You reference an interface at run time with a globally unique interface identifier ({{mono|IID}}). This {{mono|IID}}, which is a specific instance of a globally unique identifier ({{mono|GUID}}) supported by COM, allows a client to ask an object precisely whether it supports the semantics of the interface, without unnecessary overhead and without the confusion that could arise in a system from having multiple versions of the same interface with the same name.}}</ref> )
* {{mono|CLSID}} {{anchor|CLSID}} – class identifier; (Stored at {{code|[HKEY_CLASSES_ROOT\CLSID]}}). In practice it is not entirely separate from the {{mono|IID}} space, because remoting the interface can require a [[Stub (distributed computing)|proxy/stub object]] which some toolsets used to create with a {{mono|CLSID}} equal to the interface's {{mono|IID}}.
* {{mono|LIBID}} – type library identifier; (Stored at {{code|[HKEY_CLASSES_ROOT\TypeLib]}}<ref>{{cite web|url=https://msdn.microsoft.com/en-us/library/windows/desktop/ms221610(v=vs.85).aspx|title=Registering a Type Library|website=[[Microsoft Developer Network]]|publisher=[[Microsoft]]|access-date=15 December 2015}}</ref>)
* {{mono|CATID}} – category identifier; (its presence on a class identifies it as belonging to certain class categories, listed at {{code|[HKEY_CLASSES_ROOT\Component Categories]}}<ref>{{cite web|url=https://msdn.microsoft.com/en-us/library/windows/desktop/ms682451(v=vs.85).aspx|title=Categorizing by Component Capabilities|website=Windows Dev Center - Desktop app technologies|publisher=[[Microsoft]]|access-date=15 December 2015|quote=A listing of the CATIDs and the human-readable names is stored in a well-known location in the registry.}}</ref>)