Plan
active
October Windows Server patches break Exchange OWA and mail flow
- Engineer — Plan: Microsoft-confirmed: October Windows Server updates disrupt OWA authentication and mail delivery on Exchange Server. Hold October Windows Server patches on Exchange hosts until Microsoft releases a fix, or apply any documented workaround if already deployed.
- SOC/IR — Skip
- Leader — Plan: Enterprise email disruption from a widely deployed patch warrants internal coordination. Confirm whether on-premises Exchange Server is in scope and direct infrastructure teams to pause October Windows Server patches on Exchange hosts until Microsoft resolves the issue.
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