Community Forum

ANSWERED: Troubleshooting your XFINITY Internet connection when the US/DS lights are blinking


 I have no Internet access. I've noticed that the US and DS buttons on the modem are blinking, which they didn't do before. What does this mean?



***Created by our Community Experts***

The modem's lights are a visual indication of its current status. It is normal for your US/DS (upstream/downstream) lights to flash briefly while establishing a connection. Continuously flashing or blinking US/DS lights indicate that the modem is unable to establish a connection due to poor or no signal.
Typical reasons for this are:
  • There is a service outage.
  • There is a wiring misconfiguration.
  • The modem is defective.
If you are experiencing this condition, first check for a service interruption by:
  • Using the XFINITY My Account mobile app.
  • Logging into your Comcast account and clicking the check for service interruptions link.
  • Visiting the Xfinity Status Center.
  • Calling 1-800-COMCAST (1-800-266-2278) or 1-800-XFINITY (1-800-934-6489)
  • If you've registered your mobile phone number for Comcast Alerts, you can text OUT to 266278 (COMCST)
Next, inspect your wiring.  See the troubleshooting guide.
Contact Comcast if the issue persists.
Version history
Revision #:
23 of 23
Last update:
‎04-02-2019 02:10 PM
Updated by: