Here are some steps you can take to understand why you are not able to edit your assignment on Microsoft Classroom:

1. Verify if you have proper permissions to edit the assignment.
2. The Microsoft Classroom should have been created with the proper permission.
3. Check the status of the assignment.
4. Make sure the assignment is open and available for editing.
5. Check if the assignment has a due date.
6. If the due date has passed, you may no longer be able to edit the assignment.



If none of these steps help resolve the issue, reach out to tech support for advice.