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Students with Macbooks and Safari are having problems accessing Inclusive Access materials in MyClasses via the Required Course Materials link on the course menu.
The error may say that Cookies are required in order to view content however enabling cookies does not resolve the issue.
Solution:
On your Mac in Safari select Safari > Preferences > Privacy.
Uncheck the option "Prevent cross-site tracking"
Restart the browser and try logging in again.
See the video below for additional tutorial.
If this does not resolve the issue you can try another browser(ie: Google Chrome) to see if the problem persist.