Current status: We've identified the probable cause of the issue and are applying fixes. We've confirmed that our fixes are effective and users will experience service restoration as our solution reaches their respective environments; however, deployment to all affected users may take several hours to complete.
The issue has been resolved.
Some users can't access Outlook in Office 365 on the web. They may receive an error "Something went wrong - Failed to load LazyModule". Microsoft is aware of the issue and they are working to resolve it.