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Level 6

Detecting "ISAPI Extensions" Windows feature

Anyone know a way to tell whether or not the "ISAPI Extensions" Windows feature is installed in Vista or similar in Windows 7?

Our application requires this feature in order to operate and I need to make sure it is available.

I know ISAPI extensions are a bit passe but given time constraints it is easier for us to use the old approach while developing a new one.
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Level 6

For detecting whether the IIS Metabase and IIS 6 Configuration Compatibility feature is set, there is a sample DLL with source code available in the following folder:
C:\Program Files\InstallShield\2010\Samples\WindowsInstaller\Detect IIS6 Compatibility
Possibly you can modify or extend this to detect whether the ISAP Extensions feature has been installed.
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