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4610(S): An authentication package has been loaded by the Local Security Authority.

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Event 4610 illustration

Subcategory: Audit Security System Extension

Event Description:

This event generates every time Authentication Package has been loaded by the Local Security Authority (LSA).

Each time the system starts, the LSA loads the Authentication Package DLLs from HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Lsa\Authentication Packages registry value and performs the initialization sequence for every package located in these DLLs.

Note  For recommendations, see Security Monitoring Recommendations for this event.


Event XML:

- <Event xmlns="http://schemas.microsoft.com/win/2004/08/events/event">
- <System>
 <Provider Name="Microsoft-Windows-Security-Auditing" Guid="{54849625-5478-4994-A5BA-3E3B0328C30D}" /> 
 <EventID>4610</EventID> 
 <Version>0</Version> 
 <Level>0</Level> 
 <Task>12289</Task> 
 <Opcode>0</Opcode> 
 <Keywords>0x8020000000000000</Keywords> 
 <TimeCreated SystemTime="2015-10-14T03:36:41.391489300Z" /> 
 <EventRecordID>1048138</EventRecordID> 
 <Correlation /> 
 <Execution ProcessID="516" ThreadID="520" /> 
 <Channel>Security</Channel> 
 <Computer>DC01.contoso.local</Computer> 
 <Security /> 
 </System>
- <EventData>
 <Data Name="AuthenticationPackageName">C:\\Windows\\system32\\msv1\_0.DLL : MICROSOFT\_AUTHENTICATION\_PACKAGE\_V1\_0</Data> 
 </EventData>
 </Event>

Required Server Roles: None.

Minimum OS Version: Windows Server 2008, Windows Vista.

Event Versions: 0.

Field Descriptions:

Authentication Package Name [Type = UnicodeString]: the name of loaded Authentication Package. The format is: DLL_PATH_AND_NAME: AUTHENTICATION_PACKAGE_NAME.

By default the only one Authentication Package loaded by Windows 10 is “MICROSOFT_AUTHENTICATION_PACKAGE_V1_0”.

Security Monitoring Recommendations

For 4610(S): An authentication package has been loaded by the Local Security Authority.

  • Report all “Authentication Package Name” not equals “C:\Windows\system32\msv1_0.DLL : MICROSOFT_AUTHENTICATION_PACKAGE_V1_0”, because by default this is the only Authentication Package loaded by Windows 10.

  • Typically this event has an informational purpose. If you have a pre-defined list of allowed Authentication Packages in the system, then you can check whether “Authentication Package Name” is in your defined list.