Use the Sign-in Helper to locate your Yahoo ID and regain access to your account by entering your recovery mobile number or alternate email address. If you know your Yahoo ID but need …

Failed connection to the server shows up when there is an authentication problem and your Yahoo account fails to connect to a third party email app. Learn how to resolve this error when …

If you're having issues sending and receiving emails for your Yahoo Mail account in a third-party email application, you may need to reauthenticate your account by removing and re-entering …

Most issues are caused by invalid settings or if something's wrong with the Yahoo Mail account. Find out how to identify the issue when trying to enable CalDAV or CardDAV and how to fix it.

If you try to use Yahoo Mail in a third-party email client using less secure sign-in technology, you might get a "Server password has changed" or an "Authentication failed" error message.

Yahoo protects your account by using a secure and personalized verification code or URL. Learn what to do if you don't receive it or it doesn't work.

Most issues are caused by invalid settings or if something's wrong with the Yahoo Mail account. Find out how to identify the issue and how to fix it.

Some changes are coming to the way you access Yahoo using your AT&T account. Find out more in this article.

Third-party email clients like Outlook or Apple Mail use POP or IMAP to connect to your Yahoo account. Though this is designed to work seamlessly in the background, there may be reasons …

Identify legitimate Yahoo websites, requests, and communications Fix problems signing into your Yahoo account Fix issues with Yahoo Account Key Fix problems when a Yahoo website isn't …