Default System Exclusion Rules

System exclusion rules define which files will be excluded from being indexed. By default, the following folders and files are excluded in Windows 7:

■ %SystemDrive%\ProgramData\* (with some exceptions, such as %SystemDrive% \ProgramData\Windows\StartMenu)

■ %SystemDrive%\Windows\CSC\* (excludes the CSC for Offline Files)

■ %SystemDrive%\Windows *\* (excludes any old Windows installation directories)

■ %SystemDrive%\Windows\* (excludes the Windows directory)

■ C:\Users\username\AppData\* (with an exclusion for the AppData directory under each user profile being added when the user's profile is created, with one explicit exclusion being created for each user on the computer)

■ %SystemDrive%\Users\*\AppData\Local\Microsoft\Windows\Temporary Internet File s\* (excludes Windows Internet Explorer temporary files, but note that this exclusion is not updated if you move the location of these files)

The location of the indexer files is also excluded. This location is %SystemDrive% \ProgramData\Microsoft\Search\Data\* by default, but it is configurable and the exclusion will be updated if the user changes the location.

In addition, beginning with Windows 7, super-hidden files (protected operating system files that have both the hidden and system attributes set on them) and files that have their FILE_ATTRIBUTE_NOT_CONTENT_INDEXED attribute (FANCI bit) set are indexed. However, only basic properties for these types of files, such as file name, size, and date modified, are indexed—I Filter property handlers are not used when indexing these types of files. Note also that because hidden files are marked as hidden in the index, they are displayed in search results only if the user's folder settings are set to Show Hidden Files/Folders.

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