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, click Network and Internet Connections, and then 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.