When I go into mail, I am getting an error message. Authenticationfailure.
Authenticate invalid credentials.
I’m not aware of changing anything. It Worked yesterday.
I’ve tried to find an answer on the internet with no success. Can someone please help me fix my email? Thank you.
[Re-Titled by Moderator]
iPhone 14 Pro Max, iOS 18
If your mail providor is Yahoo, Go to this link yahoo mail failed to authenticate - Apple Community and do what it says there. Note the instructions are for a Mac, but the basic idea is 1) delete the existing mail account on your iphone, go to Yahoo and get an “app password” and then create a new account with that password as if you are not a Yahoo user.
Turning the phone off worked for me as I’d done all the other things suggested but until I turned the phone off and on, it wasn’t working. Thank you. Something so simple and effective.
Try the Official Yahoo Sign-in Helper (via Web Browser)
The most reliable way to reset your password is to use the official Yahoo recovery tool outside of the Mail app.
Try re-starting your phone. This along with what you did resolved my problem.
I had the exact experience and rebooted and the problem was fixed.
Not true. I have 2 yahoo emails and only one had "failed authentication" msg after I updated my IOS. The other was perfectly fine.
The update affected other password areas too, unrelated to email, which I resolved.
Taking the advice of "queenbeefastliveslow" plus whomever suggested re-starting phone solved it for me.
Power iPhone off. Wait 10sec then power back on. Open MAIL app and emails should start to download.
I changed my Apple password, and got the authentication failure. It fixed itself after I synced the phone with a lightning cable.
Well, if nothing is working for you then I would delete the app and reinstall it.
I actually feel a little stupid,, but I accidentally had put the machine in private mode. This caused a lot of of the issues I was having with signing in signing out. And the mail did the change from private mode to not private. So did this swap make the difference? I really can’t answer my own question but yet I believe that it not only made the difference but fixed all of my issues.
Can’t use new mail icon to access ail. Need to go to aol icon
aswatkins wrote:
yahoo mail failed to authenticate - Apple Community
Yup still a Yahoo issue not Apples.
Check and be sure that you have not inadvertently entered into a private browsing mode while using safari. I assume this mode scrambles your ip addresses… or something to that effect.
You might also Check and be sure that you have not inadvertently entered into a private browsing mode while using safari. I assume this mode scrambles your ip addresses… or something to that effect.
Which email provider are you having issues with? Yahoo? Gmail? Try some of the solutions listed in this thread that are specific to your provider. If it doesn’t work, let us know.
Authentication Failure for Mail on iPhone
