Change Your WiFi Password Through the Xfinity App or Website
You can change your Comcast Xfinity WiFi password in about five minutes using either the Xfinity app on your phone or the Xfinity website on any browser. Both routes take you to the same settings page and produce the same result — a new password that applies when ready to your home network. The app is faster if you already have it installed; the website works if you do not.
The password you change here is the one guests and devices use to connect to your WiFi. It is separate from your Xfinity account password (the one you use to log into your bill or account settings). Changing your WiFi password does not affect your internet service or your account login.
Key Takeaways
- You can change your WiFi password through the Xfinity app, the Xfinity website, or directly on your modem — all three methods take five minutes or less.
- Your new password takes effect when ready on all devices, but devices already connected will stay connected until you restart them or manually reconnect.
- If you forget your new password, you can view it again in the Xfinity app or website settings at any time.
- Changing your WiFi password does not affect your internet speed, your Xfinity account, or your bill.
- If your modem does not respond to password changes, restart it by unplugging it for 30 seconds, then plugging it back in.
Change Your Password Using the Xfinity App
Open the Xfinity app on your phone and sign in with your Xfinity username and password. Tap the menu icon (three horizontal lines) in the bottom right corner, then select Internet. You should see your modem listed under "Devices" or "Connected Devices."
Tap on your modem, then look for a button or link labeled WiFi Settings, WiFi Name and Password, or Network Settings. The exact label varies depending on your modem model and app version. Once you tap it, you will see two fields: one for your WiFi name (also called SSID) and one for your WiFi password. The password field will show dots or asterisks instead of the actual characters.
Tap in the password field, clear the old password, and type your new one. Passwords are case-sensitive, so uppercase and lowercase letters matter. Use at least 8 characters; Comcast recommends mixing letters, numbers, and symbols to make it harder to guess. When you are done, tap Save or explore. The app will confirm the change within a few seconds.
Change Your Password Using the Xfinity Website
Go to xfinity.comcast.net in any web browser and sign in with your Xfinity username and password. Once you are logged in, look for a section labeled Internet, Services, or Devices in the main menu. Click on it, then find your modem in the list of connected devices.
Click on your modem to open its settings page. You should see an option for WiFi Settings or Network Settings. Click that option, and you will see fields for your WiFi name and password. Click in the password field, delete the old password, and enter your new one. Remember that passwords are case-sensitive.
After you type your new password, click Save or explore. The website will confirm the change. You may see a message saying the modem is updating — this is normal and takes less than a minute. Do not unplug your modem during this time.
Change Your Password Directly on the Modem
If you prefer not to use the app or website, you can change your password directly on the modem itself. Find your modem (usually a rectangular box with lights on the front, often placed near your router or in a closet). Look for a sticker on the back or bottom of the modem that shows a web address, usually something like 192.168.0.1 or 192.168.100.1.
Type that web address into the address bar of any web browser on a device connected to your WiFi. You will be asked to log in — the username is usually admin and the password is usually motorola (or sometimes admin as well, depending on your modem model). Once you are logged in, look for a section labeled WiFi, Wireless, or Network.
Find the field for your WiFi password (sometimes labeled Passphrase or Pre-Shared Key), clear the old password, and type your new one. Click Save or explore. The modem will update within a minute. This method works even if you cannot access the Xfinity app or website for some reason.
What Happens to Devices After You Change Your Password
When you change your WiFi password, devices that are already connected to your network will stay connected for a while — sometimes hours. However, they will not be able to reconnect if they disconnect or lose signal. New devices will not be able to connect at all until you give them the new password.
To force all devices to use the new password when ready, restart your modem by unplugging it for 30 seconds, then plugging it back in. Wait for all the lights to stop blinking (usually two to three minutes), then restart each device or manually reconnect them to WiFi. When you try to connect, your phone or computer will ask for the new password.
Restart Your Modem if the Password Change Does Not Work
If you change your password in the app or website but devices still cannot connect with the new password, your modem may not have received the update. Unplug the modem from the power outlet, wait 30 seconds, and plug it back in. The lights on the front will blink as it restarts — this takes about two to three minutes.
While the modem is restarting, do not unplug it again. Once all the lights have stopped blinking and are steady, try connecting a device to WiFi with your new password. If it still does not work, check that you typed the password correctly (remember it is case-sensitive) and that you saved the change in the app or website.
If the modem still does not respond after a restart, try changing the password again using a different method — for example, if you used the app, try the website instead. Sometimes the modem needs a few minutes to process the change before it takes effect.
Find Your WiFi Password Again if You Forget It
If you change your password and then forget what you set it to, you can view it again without changing it. Open the Xfinity app, go to Internet, tap your modem, and select WiFi Settings. The password field will show dots, but you can usually tap an eye icon next to it to reveal the actual characters. On the Xfinity website, the same eye icon appears next to the password field.
If you are logged into the modem directly (using the 192.168.x.x address), the password field will also show the actual characters, so you can read it without any extra steps. Write down your new password somewhere safe, or use your phone's password manager to store it.
Frequently Asked Questions
Will changing my WiFi password affect my internet speed or service?
No. Your WiFi password only controls who can connect to your network — it has no effect on your internet speed, your service quality, or your Xfinity account. Your internet will work exactly the same after you change it.
Can I change my WiFi password if I do not have the Xfinity app?
Yes. You can change it on the Xfinity website (xfinity.comcast.net) using any web browser, or directly on the modem by typing the modem's IP address into your browser. You do not need the app.
What if I change my password but my phone still connects with the old one?
Your phone is probably still connected from before the change. Go to your phone's WiFi settings, tap your network name, and select "Forget" or "Remove." Then reconnect and enter your new password. The phone will ask for the new password because it no longer remembers the old one.
Is there a default WiFi password I can reset to if I forget my new one?
No, but you can view your current password anytime in the Xfinity app or website without changing it. If you truly cannot remember it, you can set a new one using the same steps in this guide.
Do I need to change my WiFi password regularly for security?
Changing it once every few months is reasonable if you want to prevent old guests or former household members from connecting. However, a strong password (at least 8 characters with letters, numbers, and symbols) matters more than how often you change it.