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l.bolt Welcome Some of our students have experienced the same issue  - we encourage them to clear the cache in their browser (using the appropriate browser for Canvas - for us that is Google Chrome), and re-start their browser window.  For a more "geeky" answer: A 401 Unauthorized Error can occur due to: proper authentication credentials were not sent to the server within the requested time frame server rejects the authentication credentials An error can be addressed by logging out and logging back in (which we recommend first) clear browser cookies/cache (which we recommend first and second) check the URL (only if you sent them a link and not necessarily where they select "Join") flush DNS (requires a level of basic comp tech) --> open a command prompt > type ipconfig/flushdns > select ENTER to run the command I hope this information helps you and your students! Cheers,  @JDW223 ‌ ... View more

Hi,  @paul_burt  and  Welcome! I hope I fully understand your question(s) in order to provide a correct answer here - bear with me and correct it.  The instructor reviews a quiz* as self... When previewing a quiz, a border (typically, red/purple hue) appears at the bottom of the screen and outlines the window. The border should display the word "Preview" to indicate that the instructor is previewing the quiz as if they are a student. In my experience, previewing a quiz as the instructor has not counted as an attempt. Here are some Canvas LMS Guides that may be helpful to you: How do I preview an assessment in New Quizzes? How do I view practice quiz results in a course?  The instructor completes a quiz as "Test Student"... When completing a quiz via the "Student View", the course's 'Teacher' (e.g. your role in the course you teach) is automatically viewing a quiz as if they are the "Test Student". A "Test Student" quiz attempt does count as an attempt overall. Therefore, when going back into the quiz to adjust questions or settings, the error will appear (even if the quiz is not published). While in the "Student View" you are able to complete Quizzes, comment on Discussion Boards, etc. (within reason) to test out the functionality from students' perspectives. I also find that reviewing the functionality of the "Test Student" role is quite helpful when designing a course. Here's a Canvas LMS Guide that overviews the 'Student View': https://community.canvaslms.com/docs/DOC-26310-how-do-i-view-a-course-as-a-test-student-using-student-view  My best from MS, Jeanna *Note: there are some similarities and differences between "Quizzes" and "New Quizzes". Be sure to check out the Guides: Canvas‌ for more detailed information. ... View more