RESOLVED March 4th, 2026, 9:30AM: Instructure has released a hotfix that has repaired this problem. Students will no longer see the 'Access denied' error when reviewing completed quizzes that have 'Until' dates applied.

UPDATE March 4th, 2026, 8:00AM: Instructure is validating a solution but have advised that there is additional complexity since student permissions are involved. They have not been able to provide a timeline for the fix being released.

Where possible, instructors with midterms approaching soon can use the workaround of removing the ‘Until’ date/time from the quiz Assign to settings. Note that if a quiz was not previously attempted by students, this settings change would allow them to complete it so instructors will need to communicate this with students and/or export the grade data before hand to keep a record of on-time completion.

Additional information is available on our known issues page.

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Attention Canvas Users,

Students may currently experience a problem when attempting to review completed quiz attempts. When they click the ‘Submission Details’ link, they encounter an ‘Access denied’ error.

This issue has been reported to Instructure - their engineers have identified the problem and are currently working on a solution.

Thank you for your patience as we work with the vendor to resolve this issue.

Regards,
IST Canvas Support