Change Your WiFi Password Through the Xfinity App or Website

You can change your Comcast WiFi password by logging into your Xfinity account on the Xfinity website or through the Xfinity app on your phone. The process takes about five minutes and you do not need to restart your router or call Comcast. Once you save the new password, all devices will disconnect and you will need to reconnect them using the new password.

The easiest route is the Xfinity app because it shows you step-by-step prompts. Open the app, tap the menu icon (three horizontal lines), select "Internet," then "WiFi Settings," then "Change WiFi Password." Type your new password twice to confirm it matches, then tap "Save." The app will tell you when the change is complete.

If you use a computer instead, go to xfinity.com, sign in with your Comcast username and password, click "Internet" in the top menu, then "WiFi Settings," then "Change WiFi Password." Enter your new password twice and click "Save Changes." Both methods change the same password — it does not matter which one you use.

Key Takeaways

  • You change your WiFi password through the Xfinity app or xfinity.com, not through your router itself.
  • All devices connected to your WiFi will disconnect when you save the new password and will need to reconnect with the new password.
  • Your new password must be at least 8 characters long and can include letters, numbers, and some special characters.
  • The change takes effect when ready — you do not need to restart your router or modem.

What Happens to Your Devices After You Change the Password

When you save a new WiFi password, every device currently connected to your network will lose its connection within a few seconds. This includes phones, tablets, laptops, smart TVs, security cameras, and any other device using your WiFi. You will see a "no internet" message or a WiFi icon with an X on each device.

To reconnect a device, open its WiFi settings, find your network name (the same name it was connected to before), select it, and enter your new password. On most phones and tablets, you tap Settings, then WiFi, find your network, tap it, and type the password. On a computer, click the WiFi icon in the corner, find your network, and enter the password when prompted.

Smart devices like security cameras, doorbells, or smart speakers may take longer to reconnect or may need to be reset if they do not recognize the new password. Check the device's manual or app if it does not reconnect within a minute — some require you to hold a reset button or remove and reinstall the app.

Password Requirements and What to Avoid

Comcast requires your WiFi password to be at least 8 characters long. You can use uppercase letters, lowercase letters, numbers, and these special characters: exclamation mark (!), at sign (@), hash (#), dollar sign ($), percent (%), hyphen (-), and underscore (_). Avoid spaces, quotation marks, and other symbols because they often cause connection problems.

A strong password is one you do not use anywhere else and that is not a word from the dictionary. "Comcast123" or "Password456" are weak because they are straightforward to guess. "Tr0pic@lSunset42" is stronger because it mixes uppercase, lowercase, numbers, and a symbol. Write your new password down somewhere safe — a notebook, a password manager, or a note in your phone — so you can reconnect devices later.

Do not use your Comcast account password as your WiFi password. These are two separate passwords and should stay separate. Your Comcast account password controls your billing and account settings, while your WiFi password only controls who can connect to your network.

If You Forgot Your Comcast Username or Password

You need your Comcast username and password to log into xfinity.com or the Xfinity app. If you do not remember your username, go to xfinity.com and click "Forgot Username?" at the bottom of the login screen. Enter your phone number or account number (on your Comcast bill), and Comcast will show you your username or send it to your email.

If you forgot your Comcast password, click "Forgot Password?" on the same login screen. Comcast will ask you to verify your identity by entering your phone number, account number, or the last four digits of the Social Security number on file. Once verified, you can create a new password. This new password is for your Comcast account, not your WiFi — changing it will not affect your WiFi password.

Changing the WiFi Network Name at the Same Time

While you are in WiFi Settings, you can also change your network name (called the SSID) if you want. This is the name that appears when you look for WiFi networks on your phone or computer. Some people change it to something personal like "CatsRule" or "Apartment4B" instead of the default "XFINITY-1234" that Comcast assigns.

In the Xfinity app, tap "WiFi Settings," then "Change WiFi Network Name," type your new name, and tap "Save." On the website, go to WiFi Settings and look for "WiFi Network Name" — change it and click "Save Changes." The network name can be up to 32 characters and can include letters, numbers, spaces, and hyphens. Like the password, this change takes effect when ready and all devices will disconnect.

Troubleshooting if the Password Change Does Not Work

If you see an error message when you try to save your new password, first check that you typed it the same way twice — passwords are case-sensitive, so "MyPassword" is different from "mypassword." If the error persists, sign out of the Xfinity app or website completely, wait 30 seconds, and sign back in. Sometimes the app needs to refresh to process the change.

If you can log into your Xfinity account but the WiFi Settings option is missing or grayed out, your account may not have internet service active or there may be a temporary issue with your modem. Restart your modem by unplugging it for 30 seconds, plugging it back in, and waiting two minutes for it to fully restart. Then try changing the password again.

If the password change appears to go through but your devices still cannot connect with the new password, restart your router. Unplug it for 30 seconds, plug it back in, and wait for the lights to stabilize (usually two to three minutes). Then try connecting a device again. If devices still cannot connect, the password may not have saved — try changing it again through the app or website.

Frequently Asked Questions

Do I need to restart my modem or router after changing the password?

No, the password change takes effect when ready without a restart. However, if devices cannot connect with the new password after you have tried reconnecting them, restarting your router may help. Unplug it for 30 seconds, plug it back in, and wait for the lights to stabilize before trying again.

Can I change my WiFi password from my router instead of the Xfinity app?

You can access your router's settings directly by typing 192.168.0.1 into a web browser, but Comcast recommends using the Xfinity app or website instead. The app is simpler and less likely to cause problems. If you do use the router settings, you will need the router's admin password, which is different from your WiFi password.

What if I change my WiFi password but forget what I set it to?

Go back into the Xfinity app or website, open WiFi Settings, and change the password again to something you will remember. You cannot view your current password through the app — you can only change it. If you forget it again, repeat the same process.

Will changing my WiFi password affect my Comcast email or billing?

No. Your WiFi password only controls who can connect to your network. Your Comcast account password, email, and billing are completely separate and will not be affected by changing your WiFi password.

How often should I change my WiFi password?

There is no requirement to change it regularly. Change it if you suspect someone unauthorized is using your network, if you have shared it with someone who no longer lives with you, or if you want to improve security. Most people change it once every year or two.