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

Hi MontanaM and moonlighttracks,

Welcome to Microsoft Community. Allow me to assist you today.

First off, I apologize for the delayed response. I understand that you're getting an error "Authentication failed. Try again later."

This error usually happened when you've changed your password on your account and if the Two-step verification is enabled.

In order to assist you more efficiently, we’ll need a few more details regarding your issue.

• Affected email address
• Screenshot of the error message

I've also provided an articles about Two-step verification for your reference.

Two-step verification: FAQ

App passwords and two-step verification

I've provided a private message for the both of you. Kindly check it and just make sure that you are signed in to your account to view it then click the red link above your post. 

Please post back if the information we requested to investigate your concern has been provided. 

Thanks!

Answer 2

2.5 years later, I'm still having this issue on a phone I just purchased. I have the Galaxy Note 5, and I cannot get past this

"Authentication Failed." Is there a legitimate solution for this yet or are we still expected to use our browser on our phones to manage our email?

Answer 3

~ 3 years later :)

I try Outlook Android App ... set IMAP and SMTP servers (i'm a systemadministrator, so i can set a password :))

but the outlook say: SMTP Authentication error ... i try some times, rewrite the password, check all settings, but i get always: authentication error ...

I think it will never fixed :)

Answer 4

It's so annoying to see that your smartphone is always trying to check the connection and returning that error message continuously.