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Asked: May 11, 20262026-05-11T01:48:00+00:00 2026-05-11T01:48:00+00:00

How to detect IIS version using C#? Update: I meant from a winapp (actually

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How to detect IIS version using C#?

Update: I meant from a winapp (actually the scenario is developing a custom installer that wants to check the version of the installed IIS to call the appropriate api’s)

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  1. 2026-05-11T01:48:00+00:00Added an answer on May 11, 2026 at 1:48 am

    You can get this information from the SERVER_SOFTWARE variable. It will return the following:

    Microsoft-IIS/5.0 (Windows 2000)
    Microsoft-IIS/5.1 (Windows XP)
    Microsoft-IIS/6.0 (Windows 2003 Server)

    etc.

    If you’re using ASP.NET, you can get this string via

    Request.ServerVariables['SERVER_SOFTWARE']; 

    EDIT: It seems that you will have to query the registry to get this information. Take a look at this page to see how.

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