Microsoft will perform maintenance on the OneDrive service used by the University of Oregon this Sunday, Aug. 26, starting at 5 p.m.

During the maintenance, OneDrive files will be read-only, meaning they can be viewed but not edited.

Microsoft expects files to be in read-only mode for 30 to 60 minutes. However, the official Microsoft service notice about this maintenance added that "in some rare cases, the read-only window may extend for up to four hours."