Hi @lfreese
The global control for locking announcements for replies is found within your courses settings, not in the Announcement edit. it is actually the last option on the Settings page, and the default is to permit comments on Announcements, so I suspect you inadvertently clicked the check-box when first setting up the course. If you have disabled Comments in your course settings, you cannot enable it for individual announcements. However, if you have left comments enabled, then you can turn them off for selected announcements.
You can learn more at https://community.canvaslms.com/docs/DOC-9994-4152101246
I hope this helps,
Kelley
This discussion post is outdated and has been archived. Please use the Community question forums and official documentation for the most current and accurate information.