Prevent sign-in problems by adding your mobile phone number to your account.
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Add an extra protection to your Yahoo account by activating the two-step verification feature and then connecting to 3rd party apps.
Learn how to connect to 3rd party apps when two-step verification or Account Key turned on.
If you're looking for a more secure way to sign in to your Yahoo account, learn how to use Yahoo Account Key which lets you sign in without a password.
If you're having trouble using Account Key or something's changed, learn how to update your settings and solve common mishaps.
How to sign in with Account Key and where to find your notification.
If you've upgraded your phone or prefer to receive Account Key notifications elsewhere, you can change the device that receives your notifications.
Think someone else is accessing your Yahoo account? Learn how to tell if your account has been compromised and how to secure it.
Learn what to do if your Yahoo Mail account is sending spam.
Access and manage a record of your Yahoo account's recent sign-in activity and location history.
Use Sign-in Helper to get back in to your Yahoo Account.
Go to Sign-in Helper