Hi @Binumon George ,
Microsoft has published a list of registry keys that show whether any given IIS module has been installed. Use these registry keys to programmatically check on IIS components. If a component has been installed, the registry key has a DWORD value of 00000001. If a component has never been installed or has been uninstalled, the registry key does not exist. The registry hive is as follows:
Refer to this document, match the IIS component name to its registry key.
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Hi @ BinumonGeorge-9924,
Not sure if this is the reason, you can take a look at this thread.