Workaround, not a solution. This page is a collection of things that were tried
Add images to a folder in Canvas files and use them for new quizzes. Uploading directly from your laptop will not work.
This is the work-around that actually works for me! Thank you. The issue has to do with file permissions and it should be a very easy fix for Instructure developers and it is a mystery as to why it hasn't been done by now. When you create a new quiz and upload images, even in an item bank, the attached filed are stored as part of the original course and have access permissions only for students within that course. This is very confusing for instructors because, since we always have permissions, viewing a preview of the quiz from within another course that has a copy of the original quiz seems to work! However, students in the 2nd course cannot access the images.
The work-around provided here has all of the images stored in the instructor's file folder that is outside of any particular course and global to ALL courses that they own. Now students from any of that instructor's courses can access these image files.
Yes, it is definitely a bit of extra work to upload the files into a different location before adding them into the quiz but once it is done, it is easy to copy your quizzes between courses.
Are all of your image files .PNG?
Copied quizzes do not like other image file types, especially Sophomore’s devices.
Are you using the commons to send the quiz to its new locations instead of “Copy to…”?
By publishing the quiz to the commons, we have found that the item does not have issues as long as all other conditions listed above have been met.