Disable the badge associated with a deleted module. On the course page, go to the Badges menu => Manage badges => Edit the badge (cog icon) then deactivate the badge To get the badge you can use the following SQL, replacing YOUR_CMID to the proper value: SELECT b.id AS badgeid, b.name AS badge_name, b.courseid AS courseid, c.shortname AS course_shortname FROM mdl_badge b JOIN mdl_badge_criteria bc ON bc.badgeid = b.id JOIN mdl_badge_criteria_param bcp ON bcp.critid = bc.id JOIN mdl_course c ON c.id = b.courseid WHERE bcp.name = CONCAT( "module_" , "YOUR_CMID" );  

Setup Fresh Moodle site. IMPORTANT: Steps assume you are running locally, without a cronjob running. Go to Site administration > Server > System paths and set "pathtophp" with the proper value for your environment.   Testing instructions Login as admin Create a new course: "Badge Test" Go to "Site Administration > Courses > Add a new course" Fill in Course full name as "Badge Test" Fill out Course short name as "badge" Change start date to be in the past Press Save and Display Enrol yourself in the new course Create 2 quiz assessments on "Badge Test" course, "Quiz 1" and "Quiz 2". No questions need to be added to them. Create some test badges In the course go to "More > Badges" Press Add a new Badge Enter a new badge name "Valid Badge" Fill in any description Upload/Select any image Press Create badge Change the dropdown to Course completion Enter 50 in grade Press save Press Enable Access Press Continue Press back Press Add a new badge Enter name as "Invalid badge" Enter any description Upload any image Press Create badge In the dropdown select activity completion Tick both quizzes Expand "This criterion is complete when" and select all Press Save Press Enable access Press Continue Delete the 2 quizzes from the course (Quiz 1 and Quiz 2). Completely remove the quizzes from the site: Go to "Site Administration > Server > Ad hoc tasks" Press the "Run all" link from the row "course_delete_modules" Press "Run adhoc tasks now" button Create the adhoc tasks: Go to "Site administration > Server > Scheduled Tasks" Press "Run now" on the row with the task "Add award badges adhoc tasks" Press "Run now" on the confirmation Run the adhoc tasks: Go to "Site Administration > Server > Ad hoc tasks" Press "Run all" next to "badges_adhoc_task" Press Confirm Confirm tasks have all been processed without error Confirm for the line Badge #: Valid Badge: badge was issued to 0 users. Confirm for the line Badge #: Invalid Badge: has invalid course modules, it has been made inactive https://moodle.localhost/badges/edit.php?id=#&action=badge If both the above lines are in the log shown, without any errors then both badges were processed Go to the Course > More > Badges > Manage badges" and confirm the "Invalid badge" has been automatically disabled.