Mashable reports that thousands of Microsoft Outlook users reported issues with the platform on Monday morning. The majority of these issues were related to receiving messages, Mashable states.

On August 31, 2026, CNBC reported that Microsoft Corporation (NASDAQ:MSFT) suffered a widespread Outlook and Exchange Online outage on August 31, with Downdetector reports peaking at 6,015 for Outlook ...

OpenAI's ChatGPT Work offering was down for some users on Monday, and Microsoft said it was having issues with Exchange Online.

The outage peaked in the afternoon on Aug. 31 with nearly 6,000 complaints of issues with Microsoft Outlook.

Microsoft confirms Exchange Online email delays affecting messages from external domains, with a mitigation now being applied to restore delivery.

Users are currently running into issues with Microsoft 365 services. The company has confirmed it is experiencing service degradation.

Microsoft Exchange Server is Microsoft's email, calendaring, contact, scheduling and collaboration platform. It's deployed on the Windows Server operating system (OS) for business use. Microsoft ...

Is Microsoft Outlook down? Here's what we know about the outage.

Nearly 22,000 Microsoft Exchange servers exposed online remain unpatched against a high-severity authentication bypass vulnerability that allows attackers to hijack all user mailboxes.

The emergency patches for the recently disclosed critical vulnerabilities in Microsoft Exchange email server did not come soon enough and organizations had little time to prepare before en masse ...