Application error event every minute on MSSQLSERVER : "Failure Audit: Login failed for user 'NT AUTHORITY\SYSTEM' [Client: <local machine>]



Hi,

My event viewer offers up an error each and every minute with a source of MSSQLSERVER: "Failure Audit: Login failed for user 'NT AUTHORITY\SYSTEM' [Client: <local machine>.

Can anyone suggest a possible source and a possible solution? Clearly it is a regular process of some sort originating with the system itself. Most external traffic to SQL Server-related ports is firewalled off.

The system in question is a domain controller running IIS and SQL Server on the same box (which I know you are not supposed to do as a best practice.)

Thank you,
-KF

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