Reset the Welcome Code on your SmartThings Hub
If you're having any trouble with the initial setup on your SmartThings Hub, you may need to reset the Welcome Code. The SmartThings Hub v2 (2015) and the SmartThings Hub v1 (2013) are each given a unique 6-character Welcome Code that is required to activate them. However, keep in mind the SmartThings Hub v3 (2018) and SmartThings Wifi do not use Welcome Codes.
Warning: All device connections and configurations associated with the hub will be lost when you perform a factory reset. All devices connected to the hub must be reset or excluded before they can be reconnected.
Hub v1 (2013)
Hub v2 (2015)
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