There are many possible explanations for why you are unable to log in to Yahoo Mail. The most likely reason for this is that you have misplaced or cannot recall either your username or your password. To your relief, Yahoo has streamlined the process of resetting your sign-in credentials and restoring your account so that it can be done quickly and easily. Try this out on the page where you Yahoo mail login:

• If you can’t remember your Verizon Yahoo mail login or email address, click the Forgot username? link that’s located under the Next button. On the following page, you will have the option to enter your recovery email address (another email address that you have previously linked with the account) or phone number. Once you have done so, press the Continue button, and then follow the instructions that appear on the screen to log in.
• If you’ve forgotten your password, click “Forgot Password?” to have it reset. button that’s located next to the “Next” button. Then, follow the instructions that appear on the screen to successfully log in.
• When you try to log in, you might get a message saying that your user ID or password is invalid. There are a few different approaches that are typically taken.
• Whenever you see this message, it means that you probably made a mistake when entering your credentials. Please check your spelling twice to ensure that the appropriate capitalization has been used and that related characters such as I, L, and 1 have not been confused with one another.
• If the issue continues to occur, try logging in using a different browser or device.
• Turn off any autofill features that your browser may have, and enter your Yahoo Login and password information manually instead.
• You can also reset your password by clicking on the link that says “Forgot password?”.