FWIW, I've come across customers who are not happy about installs that do this 
kind of thing, including silently adding roles also. For example, reconfiguring 
the customer's OS to add the IIS role because your app needs it is something 
that the customer should have a say about.  Non-HTTP activation may be similar. 
I don't recall many setups that installed Windows components in the past, and I 
understand the feeling that if setups didn't do it previously, why are they 
doing it now?  I wonder how many of these require the Windows installation disc 
to be available. There's also the issue of re-applying any service packs that 
may apply to any newly installed files, not sure.  

Phil Wilson 

-----Original Message-----
From: John Thornborrow [mailto:j...@pinesoft.co.uk] 
Sent: Tuesday, April 19, 2011 9:35 AM
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Ensure a Windows Feature is enabled?

Found the answer to my own question :)

W32_OptionalFeature.

Now to work out how to install it if it is not found.

J.

-----Original Message-----
From: John Thornborrow [mailto:j...@pinesoft.co.uk]
Sent: 19 April 2011 16:18
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Ensure a Windows Feature is enabled?

Hi,

I dreaded as much! :p

What equivalent class is to be use on Windows 7? (W32_ServerFeature is for 2008 
only)

Regards,
J.

-----Original Message-----
From: Skildum, Mathew [mailto:mathew.skil...@aspect.com]
Sent: 19 April 2011 14:21
To: General discussion for Windows Installer XML toolset.
Subject: Re: [WiX-users] Ensure a Windows Feature is enabled?

The best way to do this is to query the Win23_ServerFeature namespace through 
WMI in a DTF custom action.

Every Windows feature has its own ID that can be searched for.

The only restriction I have found with this method is when UAC is enabled.  The 
install must be running with elevated privileges or the logged on use may not 
have authority to access the WMI namespace.

Mat Skildum

-----Original Message-----
From: John Thornborrow [mailto:j...@pinesoft.co.uk]
Sent: Tuesday, April 19, 2011 7:17 AM
To: wix-users@lists.sourceforge.net
Subject: [WiX-users] Ensure a Windows Feature is enabled?

Hi Guys,

One of our products has a dependency on a Windows Feature (specifically the 
.NET -> WCF -> Non-HTTP Activation feature, amongst a few others).

Is there a manageable way to ensure that the machine has these features 
installed/enabled within WiX?

Thanks for any info!

Regards,
J.
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