Microsoft has identified the issue as a cooling problem in their south central data center. They are in the process of moving and reinitiating cloud services. We will update again as we know more.
Posted 6 months ago. Sep 04, 2018 - 10:36 EDT
Microsoft is currently reporting delays or problems loading SharePoint Online sites or OneDrive for Business. This may affect accessing cloud based files (for example, PowerPoint files in a web browser). We will post more information as we know more.