Using Outlook for Android in business environments for email and scheduling
Hi a_c_967,
We appreciate your time in posting to our forum. I am more than happy to assist you with your concern about authentication issues with Outlook.com app.
I understand how frustrating it is to be having this kind of problem. If the issue persists, please try changing your password online (to a shorter one) and then try login in again. Using another account will help our investigation as well. This will help us determine if the issue is account related or not. Also try using a different internet connection on your phone for isolation. We also like to ask your phone's model, OS and OS version.
If you have other questions, please do tell us and we will answer them for you.
Thank you.
I am also having the same problem... Not as often as person above by sounds of things. Doesn't seem to matter what type of phone etc... This must be the app for so many people to be having this problem from what I've read