NPS not logging any events in Event Viewer

Just recently i came across two separate occurrences (one on Server 2008 R2 and one on 2012 R2) where authentication attempts were not being logged at all through the NPS event logs.

auditpol /set /subcategory:”Network Policy Server” /success:enable /failure:enable 

The above command resolved it for me in both cases!

Hope it helps!

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