Original Known Issue report:
Users are reporting two types of errors:
1) Some users get an error stating “An unexpected error occurred” when creating a new Collaboration with Office 365.
2) Some users get a “This page isn’t working” or “HTTP ERROR 401” when attempting to access an existing Collaboration with Office 365.
It is currently unknown if the issue impacts all users and all Collaborations with Office 365.
Status
The UWSA DLE team is working with Instructure to determine the scope of the issue and possible solutions.
Workaround
We recommend that instructors create collaborative documents directly in Office 365 through the Office 365 menu item in the course navigation and then manually share Office 365 documents with the class.
Caution: Instructure Support sometimes recommends that users with issues like this “remove their Office 365 LTI token” to revoke Microsoft’s permissions to access Canvas for this user. We recommend against this step, as it will break any existing Collaborations the user has.