Resolved: Certain Canvas functions to be unavailable on Wednesday, February 22
The database server updates scheduled for February 22 during the maintenance window have been delayed until a later date. All functions on the Canvas Dashboard will be available. An update will be sent when the server updates have been rescheduled.
More information: Resolved: Certain Canvas functions to be unavailable on Wednesday, February 22
Story added 21. February 2017, content source with full text you can find at link above.