Enabling this policy allows you to specify a list of paths to index by default. The user may override these paths and exclude them from indexing. On a per-user basis this policy setting will work only if a protocol handler referencing a SID-based user scope such as MAPI is specified. File system paths that do not reference a specific SID will not be included for indexing if these are only specified in the Group Policy under "User Configuration." To include a file system path for indexing please specify the file system path to be indexed under the "Computer Configuration" Group Policy.
Any version of Microsoft Windows with Windows Search 4.0 or later