# Replacing WIN gateway

The steps to replace e.g., broken WIN gateway in existing B3 system structure:

* Physically change broken WIN gateway for a new one.
* Follow the steps from [win-gateway-setup](https://help.boomerang3.com/win-gateway-installation-manual/quick-installation/win-gateway-setup "mention") to configure a new gateway.
* Manually unlink all WIN nodes from the previous WIN gateway as described in [unlinking-a-node](https://help.boomerang3.com/win-gateway-installation-manual/link-unlink-node-with-gateway/unlinking-a-node "mention").
* Link all nodes to a new WIN gateway as descibed in [linking-a-node](https://help.boomerang3.com/win-gateway-installation-manual/link-unlink-node-with-gateway/linking-a-node "mention").
* Open B3 system. Go to Admin -> Infrastructure -> Gateways
* Find previous gateway in the list by its name and click edit button.
* Change the old gateway MAC Address with a new one.

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* Save and sign the change.

Everything shall work fine again.