Windows Firewall: MMC could not create the snap-in

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http://serverfault.com – On Windows Server 2008 when trying to open either Event Viewer or Windows Firewall settings, I'm getting the following error: MMC could not create the snap-in. The snap-in might not have been installed correctly. Name: Windows Firewall with Advanced Security CLSID: FX: {b05566ac-fe9c-4368-be02-7a4cbb7cbe11} (HowTos)