Hi,
Thanks for posting here.
Have you enabled and up this new antivirus software to date ?
What’s the antivirus software status in windows security center on client sides ?
Is there any event log on client side ?
Please make sure that system health agent is enabled .
Quick Fixes for NAP
http://technet.microsoft.com/en-us/library/dd348494(WS.10).aspx
Thanks.
Tiger Li
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