Forum Discussion
Authentication errors when trying to log in
Hello everyone,
I'm trying to assist my manager with some technical difficulties regarding his Outlook account. He says that he can't log into Outlook on his mobile devices, including an Android phone, an Android tablet, and an iPhone. The error he receives says that Outlook is failing to authenticate. He can still log in on his desktop and laptop, however, this isn't ideal because he moves a lot throughout the day. Because of this, I can't be there to investigate his devices, but I can relay assistance over the phone. I appreciate any recommendations on where to start looking to troubleshoot and resolve this issue, and will do my best to answer any other questions.
Thank you.
In the account settings from the modern authentication back to the basic authentication, but also to check whether the password is not wrong!
2 Replies
It sounds like a mobile authentication issue, possibly related to MFA or outdated app settings. A good first step is to have your manager remove and re-add the Outlook app on each device. Also, check if he’s using the latest version of the app and that the time/date settings are correct. If MFA is enabled, make sure it's set up properly on the new devices. A quick restart after reinstalling can help too.
In the account settings from the modern authentication back to the basic authentication, but also to check whether the password is not wrong!
