WELCOME TO Xfinity.com/authorize

Xfinity.com/authorize - Go through the gudie for installing and activating your Xfinity Gateway or third-party modem/router that's approved for Xfinity service.

Xfinity.com/authorize

Xfinity.com/authorize - Set up your new XFINITY cable modem simply by following these simple steps. Self-activation is available online. There is no need to call Comcast. If you need a new XFINITY modem, you will find one here for your requirements. Show all XFINITY cable modems.

Xfinity Self-Activation Steps:

  • Once the modem is online, open the web browser on your laptop and enter following address: https://xfinity.com/activate or xfinity.com/authorize.
  • Enter Comcast XFINITY account Number and Phone number associated. If you have username/password, you can just simply login with your credentials(skip step-3).
  • You will be asked to create a new username, passwords and service address info.
  • Click continue/next and it will run some remote tests on modem and present with connection established screen
  • Click Continue and it may again reboot your modem and modem will come online again. Wait for “online” LED to be solid Green. you will get a final screen showing activation is complete.
  • After this, modem is activated and you browse internet through your new purchased modem. In case, it fails, try it once more. We have seen it failing in some instances. If it fails multiple times, you will have to call Comcast.

Xfinity.com/authorize on the Roku


  1. Fitting the USB augmentation link into the USB AC connector if your presentation doesn’t as of now have a promptly accessible USB port.
  2. Attachment of the USB to Mini-USB link into the connector (through the expansion If you utilized it).
  3. Attachment the Mini-USB end into the Roku stick.
  4. Attach the Roku stick to your presentation.
  5. Attach the AC connector into an outlet or USB port.
  6. Put the batteries (remembered) in the controller.