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A "Critical Message" is a message that will appear immediately after the recipient user logs in. The user must acknowledge receipt to continue; it is not possible to use the rest of LON-CAPA until they do so.

Only Course Coordinators and/or Instructors can send Critical Messages.

To send a Critical Message, do the following:

  1. Select Messages on the Inline Menu or Send and display messages on the Main Menu.

  2. On each of the message sending screens ( New Message, New Broadcast Message, and New Messages from File), there is a checkbox Send as critical message which sends this message as a critical message. Selecting Yes in reply to "Require return receipt?" sends the message as a critical message, but additionally returns a message to you as users acknowledge receipt of the message.