Appendix D. Class IDs (CLSIDs) of System Objects

Windows keeps track of its various components with Class IDs, 33-digit codes consisting of both letters and numbers, enclosed in curly braces { }. ??? shows a list of commonly used system objects.

Table D-1. Commonly used system objects and their corresponding Class IDs

Object

CLSID

ActiveX Cache Folder

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

Briefcase

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

Compressed Folder

{E88DCCE0-B7B3-11d1-A9F0-00AA0060FA31}

Control Panel

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

Desktop

{00021400-0000-0000-C000-000000000046}

Dial-Up Networking

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

Favorites

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

Fonts

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

Internet Explorer

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

Internet Explorer Cache

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

My Computer

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

My Documents

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

My Network Places

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

Printers

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

Recycle Bin

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

Scheduled Tasks

{D6277990-4C6A-11CF-8D87-00AA0060F5BF}

Subscriptions

{F5175861-2688-11d0-9C5E-00AA00A45957}

The Internet

{3DC7A020-0ACD-11CF-A9BB-00AA004AE837}

The Microsoft Network

{00028B00-0000-0000-C000-000000000046}

URL History Folder

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

Here are some tips for working with Class IDs:

  • Class IDs are stored in the Registry under HKEY_CLASSES_ROOT\CLSID. Locate ...

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