Do you have announcements copied from a previous course? Do you wonder how to remove the "U" designation on those announcements?
When announcements are imported or copied into a Canvas section, even those you authored in a previous course, they will appear to have been written by "User," and this is denoted by a capital "U" icon on the announcements main page.
Example: (See screenshot below) Both announcements were written by the same author, but the top one was copied into the course and the bottom one was made new in the course.
To remove this U, it is necessary to make a completely new announcement. You can copy the old body of the announcement and paste it into a new announcement to show your initials or profile picture instead of the U.
How to make a new announcement (Instructors)
If you do not care about the "U," you can simply send out the announcement or delay posting it.
How to Edit the Date on an Existing Announcement