We can troubleshoot an operating system with latest security patches , the reason is , after troubleshooting we might find a module/dll which is of older version and it would
result in updating a security patch released by Microsoft.
In order to save troubleshooting time, i would recommend you to first patch the server and check for the event.
A clean reboot ( safe mode ) which will eliminate 3rd party applications such as Symantec .... and test if the issue is occurring.
If you have any concerns on the above, please feel free to post back and I am happy to answer any of your questions.
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