Which Exchange symptoms does Microsoft associate with the October Windows updates?
Microsoft lists OWA MAPI database-offline errors, Exchange event 1006, growing mail queues and DAG quorum symptoms on affected Windows Server versions. Impact varies by environment and workload.
Answered in
Exchange Symptoms After October Windows Updates: Microsoft's GuidanceMicrosoft links Exchange symptoms to October Windows updates, rules out the separate Exchange update, and warns against uninstalling patches.
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