Microsoft has confirmed that this month's Windows Server security updates are causing OWA sign-in and mail delivery issues on some Exchange Server systems.

Microsoft's October 2026 Patch Tuesday fixes 1,413 Microsoft CVEs. That is a new record, set only one month after September's ...

Microsoft's September 2026 cumulative updates are causing Remote Desktop Services failures on Windows Server 2019, 2022 and 2025 systems, cutting off connections and, in the most severe cases, forcing ...

Microsoft released its largest security update in company history on September 8, 2026, closing 966 vulnerabilities across Windows, Office, Exchange Server, SQL Server, and Azure in a record-breaking ...

The Microsoft Outlook outage that left thousands unable to use the email service is finally over. It began as the work week started. Downdetector, which tracks outages and problems for online ...

Nearly 22,000 Microsoft Exchange servers remain unpatched against CVE-2026-62911, a critical authentication bypass vulnerability, according to daily scans from the Shadowserver Foundation. The United ...

Microsoft told users on Monday evening that it was working on a fix for Outlook, Exchange Online, and other Microsoft 365 business services that were down for much of Aug. 31. "We're continuing to ...

"We're closely monitoring the health of the service environment amidst our ongoing recovery work, and we're observing some sections of affected infrastructure which aren't accepting the re-applied ...

Snow day? Microsoft on Monday confirmed a widespread, multi-hour outage affecting Outlook users, leading to email delays and failures, authentication issues, and other problems. In a post on X, ...

Treasury Secretary Scott Bessent sarcastically offered to give Sen. Elizabeth Warren a tutorial on “Foreign Exchange for Dummies” in a blistering response to her criticism of the government’s ...

Microsoft has yet to set a firm Exchange Server SE CU1 release date as engineers work through AI-assisted security findings and ongoing patch releases. Microsoft is holding Exchange Server SE CU1 ...

Russian state hackers are using a maximum-severity vulnerability in Microsoft Outlook’s Exchange Server to backdoor unpatched machines and steal credentials and other confidential information from ...