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

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

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

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 ends security updates for Exchange Server 2016 and 2019 and Skype for Business Server 2015 and 2019 after the October 2026 patches.

Microsoft has released September 2026 V2 security updates to fix an Exchange Server flaw that lets authenticated attackers access other users’ mailboxes within the same organization.

Microsoft released emergency updates for Exchange Server to fix CVE-2026-96940, a flaw that can let attackers gain higher privileges.

Microsoft patches CVE-2026-96940, which lets authenticated attackers read other users' Exchange mailboxes within the same organization.

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

Whenever we see news about rising security risks, the first self-defense measure that comes to mind is surely reviewing our ...

BTCPay Server, the open-source software many merchants use to accept Bitcoin payments without a third-party processor, has ...

Microsoft is investigating an Exchange admin center access issue that may prevent some administrators from opening the web portal used to manage Exchange Online.