On June 5th, Microsoft experienced an outage for many of their Microsoft 365 services including: Outlook on the web, Teams, OneDrive for Business and SharePoint Online due to a service update. When Microsoft service availability goes down the scramble is on for IT teams to quickly pinpoint the issue to mitigate productivity roadblocks for their users and this outage was no different.

Yesterday’s Microsoft 365 Suite-wide outages, led to continual faults for Outlook on the web on Tuesday, June 6th. When the outages pile up, it becomes difficult to tell when one starts and the other ends. The latest: Can’t access Outlook on the web and other Microsoft services and features The prior day incidents began with EX571516: Some users are unable to access Outlook on the web, and may experience issues with other Exchange Online services.

With the rapid growth of hybrid work, the need for collaboration tools that centralize audio, video, chat and documents have never been more critical. Most departments in your organization use Microsoft Teams to conduct business; VIPs conducting executive meetings in your Teams Meeting Rooms, Sales organizing calls and meetings with their prospects, Customer support teams contacting your customers and scheduling potential meetings to help them, and R&D organizing their meetings.

On Monday morning, June 5th there was a wide scale outage for Microsoft 365. Interestingly, for this one, they first reported it with a barrage of duplicate health status emails (why, we have no idea) but the issue was much more widespread than that – it was affecting most Microsoft Office 365 services: The first incident was Incident EX571516: Some users are unable to access Outlook on the web, and may experience issues with other Exchange Online services.

Office 365 is used by more than one million companies around the world. Business employees count on these apps constantly to do their jobs, whether they’re writing documents, updating spreadsheets, building slides, or checking email. While cloud-based apps like Office 365 offer undeniable advantages for enterprises and business users, they also create tough challenges for IT operations and network operations (NetOps) teams.