1 week ago
25
In Brief
Posted:
11:56 AM PDT · August 31, 2026
Image Credits:Jaap Arriens/NurPhoto / Getty Images
Snow day? Microsoft connected Monday confirmed a widespread, multi-hour outage affecting Outlook users, starring to email delays and failures, authentication issues, and different problems.
In a post connected X, Microsoft reported the contented was impacting its Exchange Online service, its cloud-hosted level for concern email, calendar, contacts, and tasks, and past said it had identified the problem.
“We’ve confirmed that users whitethorn acquisition degraded functionality with assorted Exchange Online functionalities. We’re reviewing work telemetry and diagnostic information to isolate the root of the issue,” Microsoft wrote astatine 12:43 PM ET connected Monday, aft an earlier message saying it was investigating idiosyncratic reports of Exchange Online problems.
The institution said that it identified an contented with an “authentication component” and is investigating what it believes volition beryllium a remediation strategy with a information of the infrastructure to find if it resolves the problem. If so, it volition rotation retired the solution much broadly.
We've identified an contented with an authentication constituent which is contributing to impact. To code this, we've developed a remediation strategy and we're applying it to a information of infrastructure to trial its efficacy. Once we've confirmed this resolves impact, we'll apply…
— Microsoft 365 Status (@MSFT365Status) August 31, 2026The outage is different reminder of however overmuch of the concern satellite contiguous inactive runs connected email, and peculiarly Outlook and Exchange.
This has been a reasonably lengthy outage, arsenic idiosyncratic reports started streaming successful astir 11:30 AM ET connected Monday, according to the crowdsourced outage detection website, Downdetector. By 2 PM ET, the tract was seeing northbound of 5,000 idiosyncratic reports. Meanwhile, galore others were complaining straight connected societal media platforms, similar X.
Those impacted by the outage whitethorn spot delays and failures successful sending oregon receiving messages, failures erstwhile trying to hunt for contented successful their mailbox, authentication errors, failures with mailbox operations, and different workflows related to connection delivery.
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