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Is anyone of you know how to disable, thru a GPO, the Wireless connection as soon as the computer is connected to the LAN with a wire.

By example, a user is at home with his laptop, connected to his home wifi connection. He leaves and comes to the office but the Wifi is still enabled. He plugs the ethernet cable in the computer and then, both wifi and wire connection are enable.

I would like to apply a GPO that does this.

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Unfortunately this is not possible to do exclusively with Group Policy. You will need to consider one of the other 3rd party solutions to accomplish what you want. (Those, however could be controlled through GP if you like?).

Here is a supporting TechNet thread.

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.. or you do it the easy way and configure network metrics. Make a GPO to set ethernet metrics to some number, like 50, then set wireless metrics to 100 (or whatever number that is higher than ethernet) and, voila, if an ethernet connection exists, your computer will use it instead of using wireless.

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Do you know where these settings should be applied in GPO? – r0ca Apr 22 '10 at 12:21
This does not solve the security issues regarding having both ethernet and wireless enabled at the same time. I do not see how this answers the question. – Chris Dale Oct 15 '12 at 10:35
Because metrics set the preference of connectivity. Even if both are enabled, Windows will always use the lower metric for data transfer. It does not explicitly prevent bridging, but it forces certain adapters to be used even if both are available. – Dominic Zukiewicz Jun 14 at 19:29

nvspbind can change the Network Adapter Binding Priority in Windows. The WLAN can have a higher priority than LAN, but with this utility you can change that, even in a managed environment (since it is a command line utility)!

Example: put the LAN NIC on the top of the binding order for IPv4:

nvspbind.exe /++ "Local Area Connection" ms_tcpip

Example: put the LAN NIC on the top of the binding order for IPv6:

nvspbind.exe /++ "Local Area Connection" ms_tcpip6
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