You have to be logged on as administrator.
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To remove a connection from the network bridge
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings might also prevent you from completing this procedure.
Open Network Connections.
Under Network Bridge, right-click Network Bridge, and then click Properties.
On the General tab, under Adapters, select the check box next to the adapter or adapters that you want to remove, and then click OK.
Notes
To open Network Connections, click Start, click Control Panel, and then double-click Network Connections.
When you remove an adapter from the network bridge, the adapter will have Windows Firewall enabled if Windows Firewall is turned on.
If you remove adapters from the network bridge, and fewer than two adapters remain, the network bridge will not perform its intended function, but will continue to use system resources.
TO just disable a bridge:
To enable or disable the network bridge
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings might also prevent you from completing this procedure.
Open Network Connections.
Under Network Bridge, right-click Network Bridge, and then do one of the following:
To enable Network Bridge, click Enable.
To disable Network Bridge, click Disable.
Notes
To open Network Connections, click Start, click Control Panel, and then double-click Network Connections.
You must use Bridge Connections to create the network bridge before you can enable it.
If you disable the network bridge, computers on your network will be unable to communicate with computers that are on different network segments. Some of the computers on your network may also lose Internet connectivity.
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