Newer portal is completely black in color and much faster. Note: Since Xfinity/Comcast has updated their portal, screenshots do not match but process and steps are very similar. If you attempt to install before this step, it will fail. Wait for “ONLINE” LED on the Cable modem to be solid green or solid White (depending on the model of your device).
Connect the modem to the Coax cable and then power on the modem.If your have only 1 outlet coming into your home, you will need a splitter and RG6 coax cables to split the line This ideally should be same outlet where you have connected leased modem or have connected Comcast Cable to the TV. Connect the modem to existing cable outlet in your home.Modems not on approved will fail self-activation. It will fail self-activation if it is not Comcast DNS servers.Ĭhoose one of the Comcast XFINITY approved modems from the list and purchase it. Make sure your have not configured your laptop to use other DNS servers (such as Google, OpenDNS, etc).Ideally connect directly to your Cable Modem or Wi-Fi Cable Modem Router instead of connecting via 3rd party router.If you have username/Password, then you wont need account number and phone number.If don’t have account number, it is on your monthly billing statement in your email.Make sure your have your Comcast XFINITY account number, Account holders name, phone number used on the XFINITY account.This is a how-to guide to activate your retail purchased modem with Comcast XFINITY account.
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