Title: Microsoft 365 admin center access issue

Start time: November 19, 2019, at 7:26 PM CDT

Next update by: November 19, 2019, at 11:30 PM CDT

More info: We've identified that users may intermittently experience this problem with the Microsoft 365 admin center, Exchange Online, SharePoint Online, Office Online, Microsoft Teams, Skype for Business, and Yammer. Current status: We've identified that a recent networking update may have caused user traffic coming from the internet to fail intermittently before reaching Microsoft 365 services. We've reverted this update and are seeing some initial signs of mitigation. We're continuing to validate the cause of the problem while we monitor the environment for service recovery.