Yahoo mail can show error if the server is down in your region. Make sure you are entering the correct credentials to Login into my Yahoo mail. The passwords are case sensitive. If the Caps key is one, it won’t work. If you still can’t log into Yahoo mail. Here are some the troubleshooting ways you can try.
Steps to fix Yahoo mail Log in problem-
• Go to a browser and visit Yahoo official website and log in through that.
• Click on the eye shape icon in the password box and check if you are entering the password correctly.
• Click on forgot password and reset your password.
• Go to the browser history and clear the cookies and caches.
• Exit from the browser and re enter.
• Refresh your pages.
• Restart the application and your device.