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Reasons Yahoo deactivates or deletes an account

Depending on your account's history, it's possible for it to be removed from Yahoo and become inaccessible. You can always sign up for a new Yahoo account, just keep in mind that your old Yahoo ID may not be available for you to use. These actions can result in an account being deleted:

  Confirm if your account is deleted - Use the Sign-in Helper. If your account doesn't exist anymore, you'll get a prompt indicating that it's been deactivated or that you can't reset your password online.