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I have a COM+ component on a different server, but when I made an update to one these components then it stopped working. How to configure MSDTC?

From the application log:

A caller has attempted to propagate a transaction to a remote system, but MSDTC network DTC access is currently disabled on machine 'NACHINE11'. Please review the MS DTC configuration settings.

I tried this

But it doesn't look so in Windows Server 2008 R2. Is it located somewhere else?

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up vote 4 down vote accepted

On Windows Server 2008 R2, you can enable DTC and DTC network access by installing the "Application Server" role and the related role services.

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which ones to install? – marko Nov 28 '11 at 16:03
The ones you need... in your case, you'll probably need COM+ network access and distributed transactions. – Massimo Nov 28 '11 at 17:23
There is no Application Server roleavailable on Windows Server 2008 R2 Web Edition – filimonic Jun 2 '15 at 17:10
Well, that's because it's... the web edition; which can only be used as a web server. – Massimo Jun 2 '15 at 17:36

The primary settings are configured under Admin Tools/Component Services..

From there, expand Component Services/My Computer/Distributed Transaction Coordinator/Local DTC and right click to show properties.

Specifically, compare the “security settings” tab as that determines who and what can access the DTC.

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Everything in your answer is in the link the original poster added. – Reaces Jan 15 '15 at 12:33

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