Indexing Service is no longer supported as of Windows XP and is unavailable for use as of Windows 8. Instead, use Windows Search for client side search and Microsoft Search Server Express for server side search.
The DLLsToRegister entry determines which DLLs Indexing Service registers with a call to DllRegisterServer.
|Default:||In the system default directory, QUERY.DLL, CIADMIN.DLL, IXSSO.DLL, CIODM.DLL, INFOSOFT.DLL, NLHTML.DLL, and OFFFILT.DLL.|
|Range:||May include any filter DLLs, including ones supplied by independent software vendors.|
The value of an identically named entry under the Catalog subkey for a specific catalog cannot override the value of this entry.