Class IDs of Interface Objects

Windows keeps track of its various components with Class IDs, 33-digit codes consisting of both letters and numbers, enclosed in {curly braces}. Class IDs are stored in the Registry under HKEY_CLASSES_ROOT\CLSID. Locate the key named for a Class ID under this branch to change any settings or behavior of the corresponding object. Use the Registry Editor's search feature to find the Class ID for an object not listed here by searching for the caption of the object.

The following is a list of the commonly used system objects and their corresponding Class IDs.

Object

Class ID

Administrative Tools

{D20EA4E1-3957-11D2-A40B-0C5020524153}

Briefcase

{85BBD920-42A0-1069-A2E4-08002B30309D}

Control Panel

{21EC2020-3AEA-1069-A2DD-08002B30309D}

Desktop

{00021400-0000-0000-C000-000000000046}

Favorites

{1A9BA3A0-143A-11CF-8350-444553540000}

Fonts

{BD84B380-8CA2-1069-AB1D-08000948F534}

Internet Explorer

{FBF23B42-E3F0-101B-8488-00AA003E56F8}

Internet Explorer ActiveX Cache

{88C6C381-2E85-11d0-94DE-444553540000}

Internet Explorer Cache

{7BD29E00-76C1-11CF-9DD0-00A0C9034933}

Internet Explorer History

{FF393560-C2A7-11CF-BFF4-444553540000}

My Computer

{20D04FE0-3AEA-1069-A2D8-08002B30309D}

My Documents

{450D8FBA-AD25-11D0-98A8-0800361B1103}

My Network Places

{208D2C60-3AEA-1069-A2D7-08002B30309D}

Network Connections

{992CFFA0-F557-101A-88EC-00DD010CCC48}

Printers and Faxes

{2227A280-3AEA-1069-A2DE-08002B30309D}

Recycle Bin

{645FF040-5081-101B-9F08-00AA002F954E} ...

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