Modem not connecting

I'm not sure if this method works anymore (YMMV). Try calling 1-855-652-3446. That is their self-install device activation line. Have the RF / CM / HFC MAC address and the serial number of it handy when you call. Good luck ! Please let me know.

Thank you so much for taking the time to reach out to Xfinity Support @user_s9rn1n!  We are so glad to hear from you and want to help in any way that we can to ensure you are having the best experience with your service.  No worries!  You have reached out to the best team to assist in getting things ironed out for you.  Please feel free to shoot us a private message with your details so that we can get started. 

To send a "direct message" / "private message" message to Xfinity Support:

 • Click "Sign In" if necessary

 • Click the "Direct Message" icon or https://forums.xfinity.com/direct-messaging 

 • Click the "New message" (pencil and paper) icon

 • The "To:" line prompts you to "Type the name of a person". Instead, type "Xfinity Support" there

 • As you are typing a drop-down list appears. Select "Xfinity Support" from that list

 • An "Xfinity Support" graphic replaces the "To:" line

 • Type your message in the text area near the bottom of the window

 • Press Enter to send it

@user_s9rn1n 

Did that method work for you ?