Event ID - 18

Event Id18
SourceMicrosoft-Windows-WindowsUpdateClient
DescriptionInstallation ready: The following updates are downloaded and ready for installation. This computer is currently scheduled to install these updates on %1 at %2: %3
Event InformationAccording to Microsoft :
Cause
This event is logged when the updates are downloaded and ready for installation.
Resolution
This is a normal condition. No further action is required.
Reference LinksEvent ID 18 from Microsoft-Windows-WindowsUpdateClient

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