October Windows Server updates may disrupt Exchange email. Learn which servers are affected, the symptoms, and Microsoft's ...
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 announced that it will add .msix and .msixbundle attachments to the list of blocked attachments in Outlook Web and ...
Exchange servers go down after Windows Server’s October updates. Microsoft is investigating the issue.
Say goodbye to .msix and .msixbundle files in your email (unless your admin whitelists them).
Microsoft warns that the October 2026 Windows Server updates may destabilize on-premises Exchange servers. OWA (Outlook on ...
Windows Report on MSN
Outlook is cutting off MSIX attachments over security risks
Microsoft will block .msix and .msixbundle attachments in Outlook starting in November 2026 after repeated malware abuse.
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