Earlier this week, on Tuesday, July 18th, at approximately 4:47 AM EST, Microsoft communicated via @MSFT365status that they were looking into a service incident issue in which "some" users may have been unable to send Exchange Online emails. In this initial tweet, Microsoft was very quick with specifics as to the cause: a recent change to its free/busy infrastructure.
Microsoft Office 365 Monitoring - Service Outages
Read the latest updates, root causes, and resolutions on Microsoft Office 365 service outages.
On back-to-back days this week, customers and users of Microsoft Outlook (June 27th) and Microsoft Teams (June 28th) were unable to access these services. Initially, Microsoft communicated these service issues to its customers and indicated that the impacts were isolated to its North American customers, but community responses and feedback suggested the impacts stretched beyond the NA region.
On Friday, June 9th, 2023, customers and users of the Microsoft Azure Portal were unable to access the service. Microsoft confirmed the incident with several communications to its customers, however, Microsoft was brief on specifics as to the Azure outage cause.
On Monday, June 5th, 2023, at approximately 10:50 AM (ET), Microsoft tweeted @MSFT365status that they were investigating a service incident involving access issues for Outlook on the web.
On Tuesday, May 9th, 2023, Microsoft tweeted @MSFT365status that they were investigating a service incident in which some users in the United Kingdom region were experiencing access issues for various Microsoft 365 services.
On Monday, April 24, 2023, at approximately 7:17 AM ET, Microsoft sent out its first of many tweets for the day @MSFT365status regarding an issue in which users were unable to use certain search functions in various Microsoft 365 services. With this first tweet, Microsoft disclosed no information as to what geographic regions were impacted.
On Tuesday, April 25, 2023, at approximately 4:21 PM ET, Microsoft reported via tweet @MSFT365status that they were investigating an issue that was impacting Exchange Online connectivity for users in North America.
On April 20, 2023, at approximately 7:56 AM ET, Microsoft tweeted via their account @MSFT365status that they were investigating an issue accessing Microsoft 365 online apps and Microsoft Teams Admin Center.
On March 29, 2023, at approximately 8:04 AM ET, Microsoft tweeted via their account @MSFT365status that they were investigating an issue in which some non-malicious URL links were being incorrectly marked as malicious by Microsoft Defender.
On March 27, 2023, at approximately 10:17 AM ET, the Microsoft @MSFT365status Twitter account reported that Microsoft was investigating an issue in which some users were experiencing delays and even failures when trying to open links through Safe Links.