MIUN uses your network credentials to login to Box. Continue to login to Box through your network.
If you are not a part of MIUN, continue to log in with your Box.com account.
Information how to migrate from Miun Box to OneDrive.
https://www.miun.se/en/staff/support/employee-info2/2020-11/miun-box-will-be-phased-out-and-replaced-by-onedrive/
Mittuniversitetet has provided you with a Box account to store, share, and access your files online.