Enabling ISAPI in IIS on Windows 7

An associate recently asked me if I could help him figure out why his Cognos application would not work under Windows 7, he told me that he was getting error messages saying that support for ISAPI was not installed.

The good news was that he was right, so I put together a very short guide to help him install support for ISAPI under his Windows 7 installation.

From Control Panel, launch the Programs and Features applet.

Once opened, select “Turn Windows features on or off” from the left hand side.

When the “Windows Features” window opens, expand

“Internet Information Services”

and then expand

 “World Wide Web Services”

You will see “Application Development Features”, expand this and ensure that the following items are selected:

“ISAPI Extensions”

“ISAPI Filters”

Click “Ok”

You will now have installed support for ISAPI on Windows 7.