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Cannot Connect to Internet/Very Unstable Connections

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Cannot Connect to Internet/Very Unstable Connections

Unstable connections have been going on and off for two weeks until last night when the internet finally shut off entirely. We have reset the device multiple times (reset button, unplugging) but still no good. All cables are secured in place as well. We've had this device for around two years and we haven't had a problem like this until now.
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Re: Cannot Connect to Internet/Very Unstable Connections

Check to see if Comcast is reporting an outage for your area (see https://www.xfinity.com/support/cable-tv/outages-in-your-area/).

If no outage is reported and you want to troubleshoot this yourself, please see Connection Troubleshooting Tips. If you still need help, please provide Information Requested for Connection-Related Posts. If you are using Wifi it's best to switch to an Ethernet cable connection if possible while measuring speed and checking the reliability of your connection to Comcast.

If you can't find the problem or you'd rather have Comcast do the troubleshooting, call them at the phone number on your bill or 1-800-Comcast, or chat with them using the Internet Support option at https://support.xfinity.com/chat. If they can't fix the problem remotely, insist they send a tech out to identify the cause and correct it. Loss of Internet service is often due to a poor connection between your equipment and Comcast's network, usually in or near your home.

If the tech finds bad coax, splitters, amplifiers, or connections in your home (even if Comcast originally supplied them) you'll probably have to pay for the visit. If the trouble is due to a faulty Comcast modem, eMTA, gateway device, or anything outside your home, you shouldn't be charged.