ANONYMOUS LOGON in Event Viewer

On a Windows 7 machine, in Event Viewer, Windows Log, Security, I see logons and logoffs by an account with an account name of ANONYMOUS LOGON.  What are these or how can I find out?

 

Thanks

karlo88

Hi Karlo,

 

a)      Is the computer connected to Domain network?

b)      Do you share files between computers?

c)       Do you have more than one computer in your house that shares the same internet connection by using a Router?

d)      Do you have files or a printer that is shared on this computer?

 

When your computer is connected to network or if you have shared a devices, files or folders between the computers you will get Anonymous Logon.

 

You can also refer to below link for assistance.

http://windows.microsoft.com/en-US/windows7/What-information-appears-in-event-logs-Event-Viewer

 

Hope this information helps. Let us now if you need more information on Windows.

John Rubdy
Forum Moderator | Microsoft Community

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NT AUTHORITY\ANONYMOUS LOGON sometimes used by 3rd party services
Possibly your antivirus

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Last updated April 22, 2025 Views 18,849 Applies to: