A user tries to install a networking component (like a network Protocol, NDIS IM or MUX driver, NDIS Light Weight Filter drivers or network Service), either through the Network Configuration Panel Applet (NCPA) Connection properties or via an application. If the user is a member of Network Configuration Operators group, any bindings that involve a filter driver (NDIS IM, MUX and LWF drivers) will not be created.
If the above user installs a filter driver, it will appear to be installed, but will not be loaded.
If the user installs a Protocol or Net-Service driver, any bindings that involve a filter driver will not be created.
The installation will appear to have succeded, and the component appears to be bound in the network stack. No visible error messages are displayed or logged. A review of the of the adapter's properties (under "This connection uses the following items") will give the appearance that the installation was successful.
There is a conflict in the network configuration binding engine that will fail to apply any changes made to networking configuration if a filter driver is involved AND the user is a Network Configuration Operator.
To resolve this issue, the system Administrator should remove any user that needs to install networking components from the Network Configuration Operators group.
The user must also be a member of Administrators group to be able to install the drivers.
A user might be a member of “Network Configurations Operators” group through a verity of methods. They could be explicitly added to the groups, or they may belong to one or the both of the groups indirectly. As an example, a specific user would be a member of the Network Configuration Operators group if “Everyone” is added to the Network Configuration Operators.
To determine if a user is a member of this group, Go to Computer Management, Local Users and Groups, Users and then double-click on the user. Switch to the "Member Of" tab.
Note: A user must be a member of Administrators group to be able to install/uninstall drivers.
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Article ID: 975608 - Last Review: Sep 11, 2009 - Revision: 1