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Error message when you use the System Center Configuration Manager 2007 Service Pack 1 console to connect to a Configuration Manager 2007 site server that is not running Service Pack 1

Consider the following scenario:
  • You open a System Center Configuration Manager 2007 Service Pack 1 (SP1) console and use it to connect to a site server that is running Configuration Manager 2007 without SP1.
  • You open the Site Settings\Discovery Methods item, and then you double-click the Network Discovery item.
In this scenario, you receive the following error message:
MMC has detected an error in a snap-in and will unload it.
After you receive this message, you have the following options:
  • Option 1: Report this error to Microsoft, and then shut down Microsoft Management Console (MMC).
  • Option 2: Unload the snap-in.
If you select option 2, and then you click OK, you receive the following error message, and the snap-in is shut down:
Unhandled Exception in Managed Code Snap-inFX:{6de537a5-7a1c-4fa4-ac3a-1b6fc1036560}The given key was not present in the dictionary.Exception Type:System.Collections.Generic.KeyNotFoundExceptionException stack trace:at System.ThrowHelper.ThrowKeyNotFoundException()at System.Collections.Generic.Dictionary`2.get_Item(TKey key)at Microsoft.ConfigurationManagement.AdminConsole.NetworkDiscovery.NetworkDiscoveryGeneralControl.UpdateUI()at Microsoft.ConfigurationManagement.AdminConsole.NetworkDiscovery.NetworkDiscoveryGeneralControl.InitializePageControl()at Microsoft.ConfigurationManagement.AdminConsole.SmsPropertyPage.OnInitialize()at Microsoft.ManagementConsole.PropertyPage.InternalInitialize()at Microsoft.ManagementConsole.PropertySheet.ProcessNotificationMessage(PropertyPageNotification pageNotif)at Microsoft.ManagementConsole.SnapInBase.ProcessNotification(Notification notification)at Microsoft.ManagementConsole.NamespaceSnapInBase.ProcessNotification(Notification notif)at Microsoft.ManagementConsole.Internal.SnapInClient.Microsoft.ManagementConsole.Internal.IMessageClient.ProcessNotification(Notification notification)at Microsoft.ManagementConsole.Internal.IMessageClient.ProcessNotification(Notification notification)at Microsoft.ManagementConsole.Executive.SnapInNotificationOperation.ProcessNotification()at Microsoft.ManagementConsole.Executive.Operation.OnThreadTransfer(SimpleOperationCallback callback)
The Configuration Manager 2007 SP1 console assumes that site servers have Active Management Technology (AMT) discovery information. However, such information is available only from site servers that are running Configuration Manager 2007 with SP1. When you try to obtain this information from a site server that is running without SP1, this issue occurs.

Service Pack Information

To resolve this problem, obtain the latest service pack for Microsoft System Center Configuration Manager 2007, available from this Microsoft web site:
For a list of issues resolved in this service pack, click on the following article number in the Microsoft Knowledgebase:
971348 List of hotfixes and updates that are contained in System Center Configuration Manager 2007 Service Pack 2

Hotfix information

A supported hotfix is available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing the problem described in this article. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next software update that contains this hotfix.

If the hotfix is available for download, there is a "Hotfix download available" section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the hotfix.

Note If additional issues occur or if any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. For a complete list of Microsoft Customer Service and Support telephone numbers or to create a separate service request, visit the following Microsoft Web site: Note The "Hotfix download available" form displays the languages for which the hotfix is available. If you do not see your language, it is because a hotfix is not available for that language.


You must have System Center Configuration Manager 2007 Service Pack 1 installed to apply this hotfix.

Restart requirement

You do not have to restart your computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace any other hotfixes.

File information

The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.
File nameFile versionFile sizeDateTimePlatform
To work around the issue, use a Configuration Manager 2007 console that is not running SP1 to access Configuration Manager 2007 site servers.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
If you install a Configuration Manager 2007 remote administration console on a Windows Vista-based or Windows XP-based computer, Windows Update may automatically install the administration console update for Configuration Manager Service Pack 1. This update is marked as Important in Windows Vista and as High-priority in Windows XP. If you accept all important updates, the update will be installed.

Therefore, you may find that the issue reoccurs. In this scenario, you must turn off automatic updates after you install the administration console so that you can work around the issue.

For more information, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates

Article ID: 956944 - Last Review: 10/08/2011 04:12:00 - Revision: 2.0

Microsoft System Center Configuration Manager 2007

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