[Setup]: CloseApplicationsFilter

Valid values:

A list of file name wildcards, separated by commas

Default value:

*.exe,*.dll,*.chm
Description:

Limits which [Files] and [InstallDelete] entries Setup will check for being in use. Only files matching one of the wildcards will be checked.

Setting this to *.* can provide better checking at the expense of speed.

See also:
CloseApplications
RestartApplications