Unable To Open MMC On Windows Server 2008

 Unable to open the Microsoft Management Console on Windows Server 2008 after installing Windows Updates. MMC fails with the message: 

“MMC could not create the snap-in”.

MMC could not create the snap-in. The snap-in might not have been installed correctly.

Name: Server Manger

CSLID: FX:{18ea3f92-d6aa-41d9-a205-2023400c8fbb}

Invalid entries were added to the machine.config during Windows Update.
To fix the problem, run the following command:

c:\Windows\Microsoft.NET\Framework\v3.5\WFServicesReg.exe /r /b

After running the command enable the feature .net framework 3.0 under Add features in Server Manager.

Open Server Manager
Select Features
Click on Add features
Select the check box for .Net Framework 3.0
Click Next and follow the steps to complete the Add Features Wizard

If these steps do not alleviate the issue, carry out the following steps to replace the Machine.config file with a known good version:

1. Navigate to C:\Windows\Microsoft.NET\Framework64\v2.0.50727\CONFIG

2. Rename Machine.config to Machine.config.old

3. Copy Machine.config from a known good server.

This problem occurs if the .Net Framework 3.0 feature is not enabled and an update for .net framework 3.5SP1 is installed (which could be through the windows update or through a deployment tool).

The command removes the entries added in the machine.config during Framework updates.
Note This is a "FAST PUBLISH" article created directly from within the Microsoft support organization. The information contained herein is provided as-is in response to emerging issues. As a result of the speed in making it available, the materials may include typographical errors and may be revised at any time without notice. See Terms of Use for other considerations.

Article ID: 2486109 - Last Review: 05/09/2011 17:25:00 - Revision: 2.0

Windows Server 2008 Datacenter, Windows Server 2008 Datacenter without Hyper-V, Windows Server 2008 Enterprise, Windows Server 2008 Enterprise without Hyper-V, Windows Server 2008 for Itanium-Based Systems, Windows Server 2008 for Windows Essential Server Solutions, Windows Server 2008 for Windows Essential Server Solutions without Hyper-V, Windows Server 2008 Foundation, Windows Server 2008 Standard, Windows Server 2008 Service Pack 2, Windows Server 2008 Standard without Hyper-V

  • KB2486109