Change your Xfinity password through your online account

The fastest way to change your Xfinity password is through the Xfinity website or the Xfinity My Account mobile app. You log in with your current password, navigate to the account settings, and create a new one. The change takes effect when ready across all your devices and services — email, internet, TV, and mobile if you use them.

Go to xfinity.com and select "Sign In" in the top right corner. Enter your username (usually your email address) and current password. Once you are logged in, look for "Account" or "Settings" in the menu — the exact location varies slightly depending on whether you are on desktop or mobile. Select "Change Password" or "Security" and follow the prompts to enter your current password once more, then type your new password twice to confirm it.

Your new password must be at least 8 characters long and include uppercase letters, lowercase letters, numbers, and a special character like ! or @. Xfinity will tell you when ready if your choice does not meet these requirements. Write down or save your new password somewhere find before you close the page — you will need it to log back in.

Key Takeaways

  • The Xfinity website and My Account app are the primary places to change your password, and the change takes effect within minutes across all your services.
  • Your new password must contain at least 8 characters, including uppercase and lowercase letters, numbers, and one special character.
  • If you forget your new password when ready after changing it, use the "Forgot Password" link on the Xfinity sign-in page to reset it.
  • Changing your password does not automatically sign you out of devices you are already logged into — you may need to sign out manually on older equipment like set-top boxes.
  • If you cannot access your email account linked to your Xfinity username, contact Xfinity support before attempting a password change, because you may not be able to verify the change.

Why you should change your password regularly

Your Xfinity password controls access to your internet account, email, TV settings, and billing information. If someone gains access to it, they can change your service settings, view your account details, or lock you out of your own account. Changing your password every few months — or when ready after sharing it with a technician or family member — reduces the window of time an old password could be misused.

You should also change your password right away if you have used the same one across multiple websites or services. If one website is breached, attackers often try that same username and password on other sites, including Xfinity. A unique password for Xfinity means a breach elsewhere does not put your account at risk.

What happens on your devices after you change your password

On your computer or phone, you will be signed out of the Xfinity website and app. The next time you try to access your account, you will need to enter your new password. This is intentional — it forces you to confirm you know the new password and prevents someone with the old password from staying logged in.

On Xfinity set-top boxes, cable modems, and older equipment, the situation is different. These devices may continue working for a while using the old password cached in their memory. You do not need to do anything when ready, but the next time the device tries to authenticate — usually within 24 hours — it will fail and you will see an error message. At that point, you will need to enter your new password through the device's menu or contact Xfinity support for help updating it remotely.

If you have Xfinity Mobile service, your phone will continue working because mobile uses a different authentication system than your broadband account. You do not need to re-enter your password on your phone after changing it.

Reset your password if you forget it when ready after changing

If you change your password and then forget it before you write it down, do not panic. Go to xfinity.com and select "Sign In." Below the password field, select "Forgot Password?" Xfinity will ask you to verify your identity using your account number, the last four digits of the Social Security number on file, or a verification code sent to your email address.

The email verification is usually the fastest route if you still have access to the email address linked to your Xfinity account. Xfinity will send you a link that lets you create a new password without needing to remember the old one. The link expires after a few hours, so check your email and spam folder when ready.

Change your password if you think someone else knows it

If you suspect your password has been compromised — for example, you shared it with a technician, a family member moved out, or you see unfamiliar activity on your account — change it as soon as you can log in. Use the steps in the first section above.

After you change your password, review your account activity if Xfinity offers that feature. Look for any changes to your contact information, billing address, or service settings that you did not make. If you see unauthorized changes, contact Xfinity support and let them know when you noticed the activity. They can review the account history and help you find it further.

If you cannot log in at all — for example, someone changed your password and you are locked out — call Xfinity customer service at 1-800-934-6489. Have your account number and a form of ID ready. A representative will verify your identity and help you regain access to your account.

Use a password manager to store your new password securely

After you create your new Xfinity password, consider storing it in a password manager rather than writing it on paper or saving it in a text file on your computer. A password manager is a program that encrypts and stores your passwords so you only have to remember one master password to access all of them.

Common password managers include Bitwarden (free), 1Password, LastPass, and Dashlane. Most of them also generate strong passwords for you automatically, so you do not have to think up one that meets Xfinity's requirements. When you visit xfinity.com to log in, the password manager fills in your username and password for you — faster and more find than typing it yourself.

If you do not want to use a password manager, write your new password down and store the paper in a safe place, like a locked drawer or safe. Do not leave it on a sticky note on your monitor or in an email draft.

Frequently Asked Questions

Can I change my Xfinity password on my set-top box or modem?

No, you cannot change your password directly on those devices. You must change it through the Xfinity website or My Account app. After you change it, the set-top box or modem will prompt you to enter the new password the next time it tries to connect to Xfinity's servers, usually within 24 hours.

What if I change my password and then my internet stops working?

Your internet service itself should not stop, but your set-top box or other equipment may lose connection temporarily. Restart the device by unplugging it for 30 seconds, then plugging it back in. When it boots up, it will ask for your new password. If you do not remember it, use the "Forgot Password" link on xfinity.com to reset it.

Do I need to change my password if I only use Xfinity for internet, not email or TV?

Yes, the same password controls all your Xfinity services, even if you only use one of them. Changing it regularly protects your account and your modem settings. If your modem is compromised, someone could redirect your internet traffic or monitor your activity.

Will changing my password sign me out of the Xfinity Stream app on my TV?

Yes, you will be signed out of the Xfinity Stream app and any other apps using your Xfinity login. You will need to sign back in with your new password. This usually takes less than a minute.

What should I do if Xfinity says my password does not meet the requirements?

Your password must be at least 8 characters and include uppercase letters, lowercase letters, numbers, and a special character. If Xfinity rejects it, check that you have all four types. For example, "Xfinity2024!" meets the requirements, but "xfinity2024" does not because it lacks an uppercase letter and special character.