High CPU usage on a client computer when you start the "gwmi win32_serverconnection" WMI query in Windows Server 2008 R2 SP1

Applies to: Windows Server 2008 R2 Service Pack 1Windows Server 2008 R2 EnterpriseWindows Server 2008 R2 Datacenter More


Assume that you have a network share on a computer that is running Windows Server 2008 R2 Service Pack 1 (SP1). You run an application from a client computer that starts the following Windows Management Instrumentation (WMI) query on the network share: 
gwmi win32_serverconnection 
In this situation, the client computer experiences high CPU usage, and  the query does not end.

  • This issue is observed when you use Microsoft Dynamics CRM applications.
  • This issue also occurs when you start the WMI query by running the following command in Windows PowerShell:
    gwmi win32_serverconnection 


This issue occurs because the NetConnectionEnum function is called repeatedly. The NetConnectionEnum function is used to enumerate all the connections that are made from a computer to a share. The function returns all the instances of the share in a single call. However, the system assumes that there are more instances to read. Therefore, the function is repeatedly called.


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 website: 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.


To apply this hotfix, you must be running Windows Server 2008 R2 SP1.

For more information about how to obtain a Windows 7 or Windows Server 2008 R2 service pack, click the following article number to view the article in the Microsoft Knowledge Base:

976932 Information about Service Pack 1 for Windows 7 and for Windows Server 2008 R2

Registry information

To apply this hotfix, you do not have to make any changes to the registry.

Restart requirement

You must restart the computer after you apply this hotfix.

Hotfix replacement information

This hotfix does not replace a previously released hotfix.


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about the NetConnectionEnum function, go to the following Microsoft website:For more information about software update terminology, 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