How To Register Your Modem On Xfinity

This is a how-to guide to activate your retail purchased modem with Comcast XFINITY account.

Earlier y'all begin:

Make sure your take your Comcast XFINITY account number, Account holders name, telephone number used on the XFINITY account.

If don't have account number, it is on your monthly billing statement in your e-mail.

If yous have comcast.net username/Password, so you wont need business relationship number and phone number.

Ideally connect directly to your Cable Modem or Wi-Fi Cable Modem Router instead of connecting via third party router.

Brand sure your take not configured your laptop to apply other DNS servers (such every bit Google, OpenDNS, etc). It will neglect self-activation if it is not Comcast DNS servers.

Purchasing a retail modem:

Choose one of the Comcast XFINITY canonical modems from the listing and purchase it. Modems not on approved will fail self-activation.

Installation

Connect the modem to existing cable outlet in your habitation. This ideally should be aforementioned outlet where you have connected leased modem or have connected Comcast Cable to the TV. If your take only 1 outlet coming into your home, you will need a splitter and RG6 coax cables to split the line
Connect the modem to the Coax cable and and so power on the modem
Look for "ONLINE" LED on the Cable modem to be solid light-green or solid White (depending on the model of your device) . If you attempt to install before this step, it will fail.

Self-Activation Steps:

Note: Since Xfinity/Comcast has updated their portal, screenshots do not lucifer but process and steps are very similar. Newer portal is completely black in color and much faster.

Footstep-one: One time the modem is online, open the web browser on your laptop and enter following address: https://xfinity.com/activate

Step-ii: Enter Comcast XFINITY business relationship Number and Phone number associated. If you have username/countersign, you tin can just simply login with your credentials(skip footstep-3).

Step-3: yous will be asked to create a new username, passwords and service address info.

Step-4: Click go on/next and it will run some remote tests on modem and present with connexion established screen

Footstep-5: Click Continue and information technology may again reboot your modem and modem volition come online again. Wait for "online" LED to exist solid Dark-green. you lot will become a last screen showing activation is consummate.

Later on this, modem is activated and y'all browse cyberspace through your new purchased modem. In case, it fails, try it once again. We take seen information technology failing in some instances. If it fails multiple times, yous will have to call Comcast.

If you do become a screen proverb "this device cannot be activated, telephone call 1-800-XFINITY", yous volition have to call them since your account is non capable of cocky-activation. This is rare but happens to users who have multiple modems on one account or take multiple addresses (vacation homes? on single account).