More of what you want with lightning-fast download speeds
Set up your XFINITY Internet on your Windows computer and find the appropriate connection settings.
Configure your Mac OS X settings to work with the XFINITY Internet service.
The XFINITY Internet user guides have specific information about products and services offered in your area. If you're not signed in, you will be asked to give us your address.
Learn how to keep your home wireless network safe from intruders.
Figure out why your Internet connection is slow or having issues and learn how to make the most of your XFINITY Internet experience.
If you're having trouble remembering your Comcast user name, you can use our tool to look it up.
If you're not sure where to look to sign in to your Internet account, we'll show you.
Set up your Outlook Express for email using your Comcast ID and password or learn how to run a one-click fix that will set up Outlook Express for you.
Set up Mail on your Mac OS X using your Comcast ID and password.
Comcast supports a number of devices in your home, including stand-alone routers and a combined modem and router, commonly called a Gateway. Find the access information for your devices and how to reset them to the factory defaults.
Before purchasing a modem of your own, check our list of supported modems to ensure your modem will work properly with your XFINITY Internet service.
Protect your computer from worms, viruses, and other intruders by using a firewall. Constant Guard also helps to ensure your online safety at no additional cost and including firewall protection.
XFINITY Signature Support offers 24/7/365 access to affordable, expert tech support for help with PC tune-ups, wireless networking, online security, virus removal and more.
Explore the help & support forums.
Our customer guaranteeis our promise to you.Learn more