Microsoft has acknowledged that the October 2026 Windows Server updates may be destabilizing Exchange Server. The problems are related to this list of Windows Server updates (see here) and Microsoft ...

October Windows Server updates may disrupt Exchange email. Learn which servers are affected, the symptoms, and Microsoft's ...

German]The security updates for Windows Server released by Microsoft on October 13, 2026, are also affecting Microsoft Exchange Server. Reports on my German blog and across the internet indicate ...

Microsoft released out-of-band Exchange Server security update that fixes a high-severity mailbox access vulnerability (CVE-2026-96940).

Microsoft confirms October 2026 Windows updates are causing Exchange Server failures and shares a temporary workaround for ...

Exchange servers go down after Windows Server’s October updates. Microsoft is investigating the issue.

Microsoft is ending support for Exchange Server 2016, Exchange Server 2019, and Outlook 2016 on October 14, 2025. That date might seem far off, but if you’re managing email systems or Office ...

Microsoft has announced upcoming end of life for two of its key products, Exchange Server 2016 and Dynamics 365 Project Service Automation (PSA), in 2025. First up, Exchange Server 2016 will reach the ...