Authentication failed error on Outlook application on Android device

Question

I am experiencing this same issue of the Outlook application on my Samsung Galaxy (Model SGH-T959V, Firmware Version 2.2.1).  I first encountered the issue when I updated my Hotmail application a couple of weeks ago.  That Hotmail update then provides no other option than to Upgrade to Outlook.  After installing the Outlook application, I sign in using my hotmail email and password.  The next step asks if I will "let this app access your info" at which point I press the Yes button.  Soon after that, I receive a message that "Authentification failed; Authentication was not successful" with a button to "Try Again."  I have tried again multiple times.  I have also tried uninstalling and reinstalling the Outlook application numerous times for the past two weeks and I run into the same result.

Please fix this issue soon or reinstate the previous version of Hotmail in the Play Store since the Hotmail application was working just fine.

I appreciate your time.

Peace be with you.

Original title: Authentication failed; Authentication was not successful

Sincerely,

Joseph Houser 

***Post moved by moderator to appropriate forum category***

Answer 1

Reinstall Hotmail. They're not making you upgrade anymore so the one in the Play store should work. If not look around on here some more. There are several threads related to this and some have links to an older version of Hotmail. If I find it I'll come back and add the link here.

Don't let it frustrate you because Microsoft doesn't care and its not good for your health.

Answer 2

Hi,

my phone advised me that there was an update available, which i downloaded, after which the outlook app worked straight away.

i assumed Microsoft came up with a fix, for which i am very grateful.

Thank you

Mike.

Answer 3

Hi,

 

my phone advised me that there was an update available, which i downloaded, after which the outlook app worked straight away.

 

i assumed Microsoft came up with a fix, for which i am very grateful.

 

Thank you

 

Mike.

Cool thanks! I will give Outlook another try then.

I use Hotmail now Outlook, Google, Yahoo and even AOL mails for certain things and I really don't want to combine any of them. So having Outlook work properly on all my devices would be awesome.

Answer 4

Hi Ally147,

Thank you for posting your question here in Microsoft Community. We are glad to assist you with your concern about not being able to access your account using the Outlook.com app on your mobile device.

In addition, you also mentioned that you are also not able to access your account using the native email app on your mobile device. Can you confirm if you the same issue would persist when you access your account using a computer?

In the meantime, we recommend that you download the latest version of Outlook.com app as other users reported that it resolved their issue.

If you have further questions, please do not hesitate to post back.

Regards,

Johayber T.

Answer 5

Even I am having the same issue. Repeated error message: Invalid Account, Account Mismatch:

5a) "Authentication failed"

   5b) "Authentication was not successful."

   5c) A "Try again" 

Nothing's working.