InProcessIsapiApps Metabase Property (IIS 6.0)
The InProcessIsapiApps property specifies a list of ISAPI filters and extensions that must be run in the Web server process. The string format is either Fullpath\Appname.dll, or just Appname.dll. ISAPI DLL entries without a qualifying path will match any ISAPI request that contains the DLL name, regardless of the physical path specified in the request.
For example, any of the following would be a valid list for this property: "D:\winnt\system32\inetsrv\ssinc.dll", "D:\winnt\system32\inetsrv\httpodbc.dll", "author.dll", "shtml.dll", "admin.dll".
This property only indicates which ISAPI applications are required to run in the Web server process. The inclusion of an application in this list does not imply that the application is automatically run when starting up the server. There can be significant performance issues if too many applications are forced to run outside of the server process.
You can configure this property at the following locations in the IIS metabase.
For general code examples, see Code Examples to Configure Metabase Properties.