!!! Overview
[{$pagename}] is an [Windows Security Log Event] within the [Microsoft Windows] [Logging] system indicating that the specified user exercised the user right specified in the [Privileges] field. 

The [Windows Logon] fields are used to determine details on the [logging] [event]

Unfortunately, [Microsoft] has overloaded these [privileges] so that each privilege may govern your authority to perform many different operations and which [privilege] is required for which operations is not well documented.  Therefore seeing that a privilege was exercised doesn't really tell you much.  In 
[Windows Server 2008] this has been improved with better information in the Server: and Service Name: fields.\\  
In general though, [{$applicationname}] still classifies these events as __"noise"__\\
[Microsoft] admits: "These are high volume events, which typically do not contain sufficient information to act upon since they do not describe what operation occurred."

Note: [{$pagename}] and 4674 do not log any activity associated with Logon Rights such as the SeNetworkLogonRight. Do not confuse events [{$pagename}] and 4674 with events  4717 and 4718 which document rights assignment changes as opposed to the exercise of rights which is the purpose of events [{$pagename}] and 4674. 



!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]
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* [#1] - [4673(S, F): A privileged service was called|https://docs.microsoft.com/en-us/windows/security/threat-protection/auditing/event-4673|target='_blank'] - based on information obtained 2018-03-27
* [#2] - [Windows Security Log Event ID 4673|https://www.ultimatewindowssecurity.com/securitylog/encyclopedia/event.aspx?eventID=4673||target='_blank'] - based on information obtained 2018-03-27 - based on information obtained 2018-03-27