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

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

Windows updates that Microsoft released as part of its October Patch Tuesday, as well as preview versions released earlier, ...

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.

Say goodbye to .msix and .msixbundle files in your email (unless your admin whitelists them).

Microsoft announced that it will add .msix and .msixbundle attachments to the list of blocked attachments in Outlook Web and the new Outlook Windows client starting next month.

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 ...

Some Exchange servers are experiencing Outlook sign-in and email-delivery problems after installing October 2026 Windows ...

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

Microsoft warns that the October 2026 Windows Server updates may destabilize on-premises Exchange servers. OWA (Outlook on ...

Outlook will stop opening .msix attachments from November. Renaming the file defeats it, and the policy change lands in every European tenant by default.

Only users of the classic desktop version of Outlook for Windows were affected, but now there is full access to the AI ...