1 Message

Wed, Aug 3, 2022 6:48 PM

Unable to activate modem because I can’t sign in to the app

I received my xFi gateway and was directed to download and use the xfinity app to set it up. Every time I sign in to the app, I receive the “sorry, we’re having some trouble. Please contact us at 1-800-xfinity”. I merged my two accounts but I am still not able to sign in to the app. This is very frustrating as a new customer. I am able to sign in to xfinity.com perfectly fine but the app will not work for me. 




95.8K Messages

2 m ago

Connect it to the coax line and power it up. Let it fully sync up with the system, and check that the front / top panel indicator light(s) are steadily lit. 

Then connect a computer to it and open up a browser. You *may* see their *Walled Garden* modem self registration page. If so, follow the screen prompts. Have your mobile telephone number, your Xfinity username and password, or the account number and telephone number associated with your Comcast account handy.

If not, try calling 1-855-652-3446. That is their device activation line.

If that doesn't work for you, you can call 1-800-comcast and tell a rep that you would like to have a new modem provisioned for service. Have the RF / CM / HFC MAC address and the serial number of it handy when you call.

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