IIS Launch Condition doesn't work with windows 7 (64 Bit Machine)

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Visual-Studio

setup

deployment

Hello,

I have a web setup project. I need to check whether IIS is configured on target machine before installation. I have used the following URL, IIS Launch Condition[^] , But this is not working if the target machine is Windows 7 . Can anyone help me to solve this?

Update : This issue is with 64 bit OS only.

Now I can check the presence of IIS by reading registry key. Here is the code for that.

private bool showError = false;
public bool ShowError
  {
    get { return showError; }
    set { showError = value; }
  }

private string subKey = @"SOFTWARE\Wow6432Node\Microsoft\Inetmgr\Parameters";
public string SubKey
  {
     get { return subKey; }
     set { subKey = value; }
  }

private RegistryKey baseRegistryKey = Registry.LocalMachine;
public RegistryKey BaseRegistryKey
        {
            get { return baseRegistryKey; }
            set { baseRegistryKey = value; }
        }

private void ShowErrorMessage(Exception e, string Title)
 {
    if (showError == true)
      MessageBox.Show(e.Message,Title,MessageBoxButtons.OK, MessageBoxIcon.Error);
  }

   public string Read(string KeyName)
   {
       RegistryKey rk = baseRegistryKey;
       // Open a subKey as read only
       RegistryKey sk1 = rk.OpenSubKey(subKey);
       // If the RegistrySubKey doesn't exist -> (null)
       if (sk1 == null)
       {
           return null;
       }
       else
       {
           try
           {
               // If the RegistryKey exists I get its value or null is returned.
               return (string)sk1.GetValue(KeyName.ToUpper()).ToString();
           }
           catch (Exception e)
           {
               ShowErrorMessage(e, "Reading registry " + KeyName.ToUpper());
               return null;
           }
       }
   }

private void button2_Click(object sender, EventArgs e)
   {
      MessageBox.Show(Read(@"MajorVersion"));
   }

But in my web setup project, the Launch condition is not working.
I have tried it as follows....

Name    = Search for IIS
Propery = IISVERSION
regKey  = HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft\Inetmgr\Parameters
Root    = vsdrrHKLM
Value   = MajorVersion

I have given the condition as follows....

IISVERSION >= "#4"

But this condition is not seems to be working. When I tried it in a 64 bit Windows 7 machine with IIS configured, the installer failed with IIS launch condition.

Any help on this would be appreciated.

Regards
Sebastian