This is a very common situation when you can recall your Comcast password. In such situations, you can easily reset your password and get a new one to successfully log in to your account. to do so, you can follow these steps:
Go to com/passowrd through your internet browser.
Now provide your username and click to continue.
After filling out the captcha, you will require to choose the option to reset your password.
You can select a phone number, email address, or security question to start the process.
After selecting either of these options, you will get the password reset link.
You can open that link and choose a new password as per your choice.
Confirm the password by typing it twice and close the window.
Now you can log in with your new password but if you get some further issues, then contact at comcast tech support number for prominent solution.