That error is a Microsoft 401 Error. We have a Help guide that can explain what that error could be. Here is the article: https://td.byui.edu/TDClient/79/ITHelpCenter/KB/ArticleDet?ID=12627
The article suggests the following:
"BYU-Idaho provides access to most Microsoft apps; to get access, use your school email and credentials. If you get this error when signing into a Microsoft Office application or service, please completely sign out and ensure that you are using your school-issued email. The school-issued email is formatted like this: email@example.com. Additionally, make sure you have your username and password correct. "
If you do have issues you can always call or chat with the IT Service Desk for further assistance Here are their hours:
Hours of Operation: Mon - Fri 7:30 AM - 8:00 PM, Sat 10:00 AM - 4:00 PM Mountain Time
(excluding weekly devotional, forum hour and University Recognized holidays)