At 11 a.m. today (Aug. 20), a system-wide error affected Fall Term 2020 (2211) courses. There does not appear to be any loss of course content or student submissions. However, Course Navigation Menu, Course Settings, and Homepage settings appear to have reverted to the system defaults. Instructors can restore any previous adjustments to these settings by following the instructions here. Instructors with impacted courses will be notified via email. We have identified the root cause of the error and have taken steps to prevent a reoccurrence.