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Forum Discussion
Registration is required
It appears that registration is required in order to configure the router (to change the SSID, for example).
Here is my experience. After a Factory Reset, I connected (via an Ethernet cable to a LAN port) to a Netgear R6400 (pre-owned, purchased from eBay) using a browser directed to 192.168.1.1. I encountered a screen requiring me to register. My attempt to register failed, because the router had been registered by a previous owner.
My experience with Netgear routers has been that every time I perform a configuration, the "Register this device" screen pops up and I simply ignore it and go on to the next screen.
It might be useful to examine that screen carefully.