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WiFi Connected but No Internet

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WiFi Connected but No Internet

My devices show strong WiFi signals on both 2.4 and 5GHz and they "connect" but I don't have Internet access. Sometimes switching from one band to the other will provide access, but it's always only temporary. What's going on and how do I get that fixed? Restarting the Gateway didn't fix the issue, which started occurring last week but has been persistent since then on all devices.
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Re: WiFi Connected but No Internet

If 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 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.