Problem:
I cannot sign into Sharepoint for DataCamp's Excel courses.
Solution:
This issue is most prevalent in Safari, though you may see it in any browser that prevents cross-site tracking.
For Safari, go to Preferences… > Privacy, where you can uncheck Prevent cross-site tracking.
If you're still having issues with SharePoint within DataCamp, contact DataCamp Support via our live chat (bottom right) with URLs and screenshots, as we'd be happy to take a look right away.