Known folder identifier keys

A known folder identifier is a GUID that identifies a system folder. It was introduced in Windows Vista to replace the constant special item identifier list (CSIDL).



Name Data type Description
Attributes REG_DWORD
Category REG_DWORD
Name REG_SZ Name of the known folder
LocalizedName REG_EXPAND_SZ Localized name of the known folder
ParentFolder REG_SZ Path of the parent directory known folder, can contain a known folder identifier
RelativePath REG_SZ Relative path of the known folder

LocalizedName value data

The LocalizedName value contains a localized version of the folder name, e.g. on Windows XP the folder identifier key:


Has a LocalizedString value with the following data:


Which is the MUI Form for “My Documents”.