Resetting the device erases the current configuration of the router completely. It will set back the device to default factory settings. For Xfinity router password reset follow the steps mentioned below. It is an important step after you reset the router.
Steps to reset password:
Go to Xfinity.com/password.
Enter you ID and click Continue.
There is a security check, you have to copy the exact letters in the provided box.
Now, select a way to recover your password and click Continue.
You would receive a reset code on your mobile number.